Abdominal wall & acute abdomen

1. The most common hernia in females is:A. Femoral hernia.B. Direct inguinal hernia.C. Indirect inguinal hernia.D. Obturator hernia.E. Umbilical hernia.Answer: C

Abdominal wall & acute abdomen

DISCUSSION: Indirect inguinal hernias are the most common hernia in both females and males. Femoral hernias aremore common in females than in males.

2. Which of the following statements regarding unusual hernias is incorrect?A. An obturator hernia may produce nerve compression diagnosed by a positive Howship-Romberg sign.B. Grynfeltt's hernia appears through the superior lumbar triangle, whereas Petit's hernia occurs through the inferiorlumbar triangle.C. Sciatic hernias usually present with a painful groin mass below the inguinal ligament.D. Littre's hernia is defined by a Meckel's diverticulum presenting as the sole component of the hernia sac.E. Richter's hernia involves the antimesenteric surface of the intestine within the hernia sac and may present withpartial intestinal obstruction.Answer: C

DISCUSSION: Sciatic hernias usually present with intestinal obstruction or a mass in the gluteal or infragluteal region.

3. Staples may safely be placed during laparoscopic hernia repair in each of the following structures except:A. Cooper's ligament.B. Tissues superior to the lateral iliopubic tract.C. The transversus abdominis aponeurotic arch.D. Tissues inferior to the lateral iliopubic tract.E. The iliopubic tract at its insertion onto Cooper's ligament.Answer: D

DISCUSSION: Placement of staples inferior to (below) the lateral iliopubic tract may result in injury to the lateralfemoral cutaneous nerve or the genitofemoral nerve. Staples should also not be placed within the triangle of doom,owing to the risk of major vascular injury.

4. The following Nyhus classification of hernias is correct except for:A. Recurrent direct inguinal hernia—Type IVa.B. Indirect inguinal hernia with a normal internal inguinal ring—Type I.C. Femoral hernia—Type IIIc.D. Direct inguinal hernia—Type IIIa.E. Indirect inguinal hernia with destruction of the transversalis fascia of Hesselbach's triangle—Type II.Answer: E

DISCUSSION: An indirect inguinal hernia with destruction of the transversalis fascia of Hesselbach's triangle isclassified as a Type IIIb hernia. Also classified as Type IIIb hernias are sliding, pantaloon, and massive scrotal hernias.Type II hernia is an indirect inguinal hernia with a dilated internal ring but without displacement of the inferior deepepigastric vessels or destruction of the transversalis fascia of Hesselbach's triangle.

5. Which of the following statements about the causes of inguinal hernia is correct?A. Excessive hydroxyproline has been demonstrated in the aponeuroses of hernia patients.B. Obliteration of the processus vaginalis is a contributing factor for the development of an indirect inguinal hernia.C. Physical activity and athletics have been shown to have a protective effect toward the development of inguinalhernias.D. Elevated levels of circulating serum elastalytic activity have been demonstrated in patients with direct herniationwho smoke.E. The majority of inguinal hernias are acquired.Answer: D

Asir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomenDISCUSSION: A correlation between cigarette smoking and an inguinal hernia formation has been demonstrated.Elevated circulating serum elastalytic activity and free active unbound neutrophil elastase has been detected in smokers.

6. The following statements about the repair of inguinal hernias are true except:A. The conjoined tendon is sutured to Cooper's ligament in the Bassini hernia repair.B. The McVay repair is a suitable option for the repair of femoral hernias.C. The Shouldice repair involves a multilayer, imbricated repair of the floor of the inguinal canal.D. The Lichtenstein repair is accomplished by prosthetic mesh repair of the inguinal canal floor in a tension-freemanner.E. The laparoscopic transabdominal preperitoneal (TAPP) and totally extraperitoneal approach (TEPA) repairs arebased on the preperitoneal repairs of Cheattle, Henry, Nyhus, and Stoppa.Answer: A

DISCUSSION: The Bassini repair is accomplished by high ligation of the hernia sac followed by suturing the conjoinedtendon and the internal oblique muscle to the inguinal ligament.

7. Which of the following statements concerning the abdominal wall layers are correct?A. Scarpa's fascia affords little strength in wound closure.B. The internal abdominal oblique muscles have fibers that continue into the scrotum as cremasteric muscles.C. The transversalis fascia is the most important layer of the abdominal wall in preventing hernias.D. The lymphatics of the abdominal wall drain into the ipsilateral axillary lymph nodes above the umbilicus and intothe ipsilateral superficial inguinal lymph nodes below the umbilicus.Answer: ABCD

DISCUSSION: The integrity of the abdominal wall is maintained principally by the transversalis fascia. Scarpia's fasciaaffords little strength in wound closure, but its approximation contributes considerably to the creation of an aestheticallyacceptable scar. The cremasteric muscles of the spermatic cord are a continuation of muscle fibers from the internalabdominal oblique musculature. The lymphatic supply of the abdominal wall follows a simple pattern. These superficiallymphatics run parallel to the superficial veins, which above the umbilicus drain into the ipsilateral axillary vein andbelow it into the ipsilateral femoral vein.

8. Which of the following congenital abnormalities are correctly defined?A. Omphalocele represents a defect in the abdominal wall lateral to the umbilical cord.B. The herniated viscera associated with omphaloceles are usually covered with a membranous sac.C. An umbilical polyp is a small excrescence of omphalomesenteric duct mucosa that is retained in the umbilicus.D. Meckel's diverticulum results when the intestinal end of the omphalomesenteric duct persists and represents a truediverticulum.Answer: BCD

DISCUSSION: Omphalocele may be seen in newborns and represents a defect in the closure of the umbilical ring. Theherniated viscera are usually covered with a sac. Gastroschisis, a defect of the abdominal wall lateral to the umbilicalcord, is caused by failure of closure of the body wall. The intestines protrude through the defect, and no sac is present tocover the herniated intestine. In the fetus, the omphalomesenteric duct may present as abnormalities related to theabdominal wall when the duct fails to obliterate. Meckel's diverticulum is the result of the failure of obliteration of theintestinal end of the omphalomesenteric duct. This is a true diverticulum with all layers of the intestinal wallrepresented. An umbilical polyp is a small excrescence of omphalomesenteric duct mucosa retained in the umbilicus.Such polyps resemble umbilical granulomas except that they do not disappear after silver nitrate cauterization.Appropriate treatment is excision of the mucosal remnant.

9. The following statement(s) is/are true concerning the indications for treatment of an inguinal hernia.

a. Most adult hernias will remain stable in size, therefore delay seldom affects the technical aspects of a surgicalrepair

b. There is a direct correlation between the length of time that a hernia is present and the risk of majorcomplications

c. The morbidity and mortality associated with emergent operation due to hernia complications is significantlygreater than for elective repair of the identical hernia

d. A truss maintains a hernia in the reduced state, therefore, minimizing the risk of incarceration and

strangu lationAnswer: b, cAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).


The indications for hernia repair must be individualized for each patient and the particular situation. In general, thepresence of a hernia may be considered an adequate indication for hernia repair. Certainly the presence of complicationsdue to hernia necessitates the correction of those complications and usually the repair of the hernia. As with anytreatment, the benefits of operative repair must be weighed against the natural history of the disease, the extent to whichthe treatment can correct the problem, the possibility of treatment-related injury, and the interference of concomitantdisease with the treatment results. With a few exceptions, the natural history of an abdominal wall hernia is that the sizeof the defect and the sac enlarges over time, and this enlargement increases the difficulty of adequate repair and thechances of recurrence of the hernia. The risk of major complications is greater in an individual patient, the longer theexposure to a hernia and the larger the sac relative to the hernia defect. In addition, major complications necessitate anemergent operation with attended high mortality and morbidity relative to that experienced with an elective repair. Theuse of a truss, an external support device using a system of straps to exert regional pressure over the hernia defect,should generally be avoided. Trusses do not consistently maintain a hernia in the reduced state, and they may put anunreduced hernia in greater jeopardy of strangulation. The pressure exerted induces edema by decreasing lymphatic andvenous flow out of the herniated bowel. Trusses may also lead to injury to the skin overlying the hernia.

10. Which of the following statement(s) is/are true concerning the diagnosis and management of epigastrichernias?

a. A large peritoneal sac containing abdominal viscera is commonb. At the time of surgical repair, a careful search for other defects should be performedc. Recurrent epigastric hernias after simple closure is uncommond. Patients with symptoms of a painful midline abdominal mass frequently will contain incarcerated small bowel

Answer: b

Epigastric hernias are usually small but they vary considerably in size. Most of these defects occur in the midline. Thesmall defects contain only preperitoneal fat with no sac. With increasing size, fat in the falciform ligament andeventually a peritoneal sac and abdominal viscera may be contained within the hernia. The preperitoneal fat in the smalldefect is usually incarcerated. Multiple defects may be present in up to 20% of patients. Surgical treatment isrecommended in all adult patients with symptoms or with a hernia defect greater than 1.5 to 2 cm. in diameter. Methodsof repair depend upon the size of the defect. For small defects, simple closure with obliquely placed sutures afterreduction or removal of the preperitoneal fat from the defect has been recommended. However recurrent epigastrichernias in up to 10% of the cases have been reported with this method, most likely as a result of additional undetectedor unrepaired weaknesses in the epigastric midline.

11. The following statement(s) is/are true concerning neurovascular structures in the inguinal region.

a. The inferior epigastric artery and vein run upward in the preperitoneal fat posterior to the transversalis fasciaclose to the lateral margin of the internal inguinal ring

b. The iliohypogastric and ilioinguinal are motor and sensory nerves in the inguinal region which lie beneath theexternal oblique aponeurosis

c. The ilioinguinal nerve runs anterior to the spermatic cord in the inguinal canal and at the superficial inguinalring, branches into the sensory supply to the pubic region and the upper scrotum or labium majoris

d. The genital branch of the genitofemoral nerve is a sensory nerve only to the upper thigh and genital areaAnswer: b, c

Arising anteriorly from the external iliac artery, the inferior epigastric artery with its accompanying vein runs obliquelymedially and upward in the preperitoneal fat, posterior to the transversalis fascia and close to the inferior margin of theinternal inguinal ring. Inguinal hernias arising superior to the inferior epigastric vessels are indirect inguinal hernias,whereas those arising inferior to the vessels are direct inguinal hernias. The iliohypogastric and ilioinguinal nerves aremotor and sensory nerves to the muscles and skin of the inguinal region. The nerves penetrate the transversus abdominismuscle at the point above the middle of the iliac crest, lie below the internal oblique muscle up to the point just medialand superior to the anterior superior iliac spine, and then penetrate the internal oblique muscle and lie below theexternal oblique aponeurosis. The ilioinguinal nerve runs anterior to the spermatic cord in the inguinal canal and at thesuperficial inguinal ligament, branches into sensory supply to the pubic region and the upper scrotum or labium majoris.The genital branch of the genitofemoral nerve perforates the transversalis fascia usually just inferior to the internal ring.It courses along the posterior surface of the spermatic cord and supplies motor fibers to the cremaster muscle. At thesuperficial inguinal ring, it divides to provide sensory innervation to the scrotum and medial aspect of the upper thigh.

Asir Surgery MCQs Bank. © 1422H-2002- first impression ©

This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

12.Abdominal wall & acute abdomen

In advising a patient preoperatively of potential complications of operative treatment of an inguinal hernia,which of the following statement(s) is/are true?

a. Severe symptoms due to sensory nerve entrapment or injury can occurb. The most common vascular structure injured during the course of a groin hernia repair is the femoral arteryc. Recurrent hernia after primary groin repair should occur in less than 10% of casesd. Wound infection increases the risk of recurrent hernia

Answer: a, c, d

Many complications can occur with operations to repair an inguinal hernia. Sensory nerve injury may lead to disablingsymptoms from neuromas or nerve entrapment during inguinal hernia repair. Although vascular injuries are uncommonin inguinal repair, the proximity of the femoral vein to the structures used in the hernia repair makes injury of this vesselthe most frequent vascular injury observed. Hernia recurrence after primary groin hernia repairs should be infrequentand varies in several large series from less than one percent to almost nine percent. The prevalence of recurrent herniamay be higher after repair of recurrent groin hernia. Factors responsible for hernia recurrence include closure underexcessive tension, failure to identify and use an adequately strong musculoaponeurotic tissue, and wound infection.

13. Chylous ascites is the accumulation of chyle within the peritoneal cavity. Which of the following statement(s)is/are true concerning chylous ascites?

a. The cisterna chyli lies at the anterior surface of the first and second lumbar vertebrae and receives lymphaticfluid from the mesenteric lymphatics

b. Chylous ascites is most commonly associated with abdominal lymphomac. Paracentesis and analysis of chylous fluid typically reveals elevated triglycerides, protein, and leukocyte levels

with cytologic analysis reflecting the underlying presence of malignancyd. Treatment of chylous ascites with dietary manipulation will be successful in most casese. The mortality rate in adults with chylous ascites is in excess of 50%

Answer: a, b, e

Chylous ascites is accumulation within the peritoneal cavity of chyle, a lymphatic fluid with a high lipid content.Access of intestinal lipids to the circulation is via mesenteric lymphatics that enter the cisterna chyle, which in turnbecomes the thoracic duct which eventually enters the venous system at the junction of the left subclavian and internaljugular veins. The cisterna chyli lies at the anterior surface of the first and second lumbar vertebrae slightly to the rightof the aorta. Chylous ascites may result from injury to major lymphatic duct or the cisterna. However for lymphaticleakage to persist, widespread occlusion of lymphaticovenous collaterals within the abdomen must be present.Malignancy is the predominant cause (88%) of spontaneous chylous ascites in adults, with lymphoma the most commonmalignancy. Diagnostic studies must include not only documentation of lymphatic origin of the abdominal fluid but alsoan attempt to delineate the cause of chylous ascites. Paracentesis and analysis of chylous fluid typically reveals elevatedtriglycerides, protein, and leukocyte levels, with a predominance of lymphocytes. Unfortunately, cytology is seldompositive despite the presence of malignancy. Lymphangiography may define the site of lymphatic leak for patients inwhom the leak is from the cisterna or retroperitoneal lymphatics but not when from the mesenteric or hepaticlymphatics. Of noninvasive studies, CT is the test of choice, with a high diagnostic yield in nontraumatic chylousascites in adults. Frequently, laparotomy with node biopsy is required for histology and typing in cases suspected to becancer, particularly for lymphoma. Treatments for chylous ascites have been directed toward decreasing lymph andtriglyceride accumulation. Successful resolution of chylous ascites has been achieved using a fat-restricted diet withadded medium-chain triglycerides in an attempt to reduce lymphatic transport of triglycerides and perhaps intestinallymph flow. Although there have been reports of success using such dietary manipulation, many failures have beenreported. Therefore, in most patients with chylous ascites, treatment is likely to be successful only when directed towardthe underlying cause. For patients with lymphoma, therapy effective against lymphoma is likely to eliminate chylousascites.The prognosis for patients with chylous ascites is much better in infants and children than in adults, principally becauseof the differences in causes of the condition. A mortality of 21% is reported in infants and children whereas a mortalityof 88% has been noted in adults. Patients with chylous ascites with associated neoplasms typically have the gravestprognosis.

14. Which of the statement(s) is/are true concerning laparoscopic hernia repair?

a. General anesthesia is requiredb. Either an abdominal or preperitoneal approach is possible

c.Th

e use of prosthetic mesh is required in all variationsd. Long-term results suggest that the laparoscopic approach is equal or better than traditional repairs


Answer: a, b, cAbdominal wall & acute abdomen

The laparoscopic approach to the repair of groin hernias has been recently developed. Either a transabdominalapproach, wherein the peritoneum in the inguinal area is opened, and the repair is performed in the preperitoneum or anentirely preperitoneal approach can be used. In either technique, which are both performed under general anesthesia,after reducing the visceral contents out of the hernia, the repair is performed by placing a sheet of prosthetic mesh overthe internal aspect of the inguinal floor and internal ring. Although early results and short-term benefits appearpromising, long-term follow-up data is still not available to compare these techniques with traditional repairs.

15. A 28-year-old woman with a history of an appendectomy presents with a nontender palpable mass in the rightlower quadrant abdominal incision. The following statement(s) is/are true concerning the diagnosis and management ofthis patient.

a. The best diagnostic test involves imaging of the abdominal wall by either CT or MRIb. Resection of the mass with a 2 cm margin is usually adequatec. Low dose radiation is a suitable alternative to surgery for primary treatmentd. Re-resection for recurrence will likely have a higher rate of recurrence than for primary resection

Answer: a

Desmoid tumors are fibromatous tumors that may resemble low-grade fibrosarcoma but never metastasize. The tumoroften infiltrates adjacent muscle and has a high incidence of recurrence despite seemingly adequate gross resection. Thehighest frequency is in women of childbearing age of which over 90% of tumors are abdominal in location. Forabdominal wall desmoid tumors, approximately one-third are associated with a previous operation at the tumor site. Themost frequent presenting symptom is a nontender, palpable abdominal wall mass. Diagnostic imaging is best carried outby CT or MRI, which delineate the extent of involvement of the layers of the abdominal wall and potentialintraperitoneal extension. Initial treatment of abdominal wall desmoid tumors is surgical. Because the margins of thetumor are not easily determined and because the tumor often infiltrates muscle and periosteum, limited margins aroundthe gross tumor frequently result in microscopic tumor at the margin. Recurrence rates for abdominal desmoid tumorsvary from 9% to 40%, and recurrence is frequent with inadequate margins. A 5-cm margin of resection is consideredadequate with mono bloc resection of rib cage, pubic or iliac bone or involved portions of organs such as bladder toachieve these margins. Reconstruction of the abdominal wall with polypropylene mesh is necessary in most cases. Inpatients in whom adequate margins of resection are achieved, there is no benefit from adjuvant radiotherapy. Secondand third resections after recurrence have been associated with no higher rate of recurrence than primary resection.Radiotherapy alone has achieved local control in desmoid tumor in as many as 100% of tumors treated primarily and75% of recurrent tumors. Radiation doses at least 60 Gy are considered necessary for consistent control. The largeradiation dose risks major damage to adjacent bowel and therefore primary radiation treatment of abdominal walldesmoid tumors has a limited role.

16. Which of the following statement(s) is/are true concerning repair of inguinal hernias?

a. The Bassini repair approximates the transversus abdominis aponeurosis and transversalis fascia and theshelving edge of the inguinal ligament.

b. The Bassini repair is an adequate repair for a femoral herniac. A relaxing incision is important for repairs of direct and large indirect inguinal hernias to prevent excessive

tension in the closured. An advantage to the use of prosthetic material is the mesh incites formation of scar tissue to further increase

tensile strength provided by the mesh aloneAnswer: a, c, d

The Bassini repair is an inguinal hernia repair used world-wide and has been the standard against which other repairsare judged. The repair involves approximation of the transversus abdominis aponeurosis and transversalis fascia and thelateral edge of the rectus sheath to the shelving edge of the inguinal ligament. A femoral hernia cannot be repaired bythe Bassini repair because the orifice to the femoral canal lies deep to the inguinal ligament. A Cooper’s ligament repairdoes approximate the structures to the transversalis fascia of the pectineal (Cooper’s) ligament between the pubictubercle and the femoral vein and therefore is appropriate for repair of a femoral hernia. A relaxing incision for repairsof direct and large indirect inguinal hernias prevents excessive tension in the closure. There are an increasing number ofproponents for the use of prosthetic material for the routine repair of inguinal hernias. Prosthetic material, such aspolypropylene mesh, have been used for years for repair of large or recurrent inguinal and femoral hernias. Theprosthetic mesh provides a low-tension repair for such large defects which otherwise could not be closed without

excessive tension. In addition, the mesh incites the formation of scar tissue to further increase tensile strength beyond


Abdominal wall & acute abdomenthat provided by mesh alone. Results reported for inguinal hernia repairs using mesh have been excellent, although thereis a slight risk of infection of the prosthetic material which must be considered.

17. The following statement(s) is/are true concerning the epidemiology of inguinal hernias.

a. Inguinal hernias occur with a male-to-female ratio of about 7:1b. Femoral and umbilical hernias are more common in women, with a female-to-male ratio of 4:1c. The frequency of inguinal hernias increases with aged. Almost all umbilical hernias occur in the pediatric age group

Answer: a, c

Inguinal hernias are the most frequently occurring hernia by a factor of five over other individual types. Umbilicalhernias constitute about 14% of hernias, femoral hernias about 5%, and other types are rare. There is a male prevalencein inguinal hernias of about 7:1 (male-to-female), whereas there is a female dominance in femoral and umbilical herniasof 8:1 and 7:1 (female-to-male), respectively. For inguinal hernia, which occurs at all age levels, frequency increaseswith age. Umbilical hernias have a bimodal distribution, peaking in the pediatric population and then in the 40 to 60year group, in which the hernias are principally paraumbilical.

18. A 77-year-old multiparous female presents with a bowel obstruction. She has no previous abdominaloperations and no abdominal wall hernias can be detected. In addition to her abdominal symptoms, she reports pain inher right medial thigh. The following statement(s) is/are true concerning her diagnosis and management.

a. Expectant management with nasogastric suction and IV fluid replacement is indicatedb. A right groin approach is indicated for exploration and repair of the presumed herniac. The use of a polypropylene mesh will likely be necessary for repaird. A correct diagnosis can usually be made by visualizing an external mass in the upper, medial thigh

Answer: c

An obturator hernia is a hernia that occurs through the obturator canal, accompanied by the obturator vessels and theobturator nerve. Although rare, most obturator hernias occur in older multiparous women and are predominantly right-sided. Symptoms are frequently intermittent but tend to be acute and become increasingly severe with incarceration ofthe hernia. Intestinal symptoms predominate, but dysesthesia or pain in the medial thigh with occasional radiation to thehip is often present. Dysesthesia results from compression of either division of the obturator nerve. Although the herniais never externally visible, in a small percentage of patients a mass can be palpated in the upper, medial thigh. A correctdiagnosis of obturator hernia is made in only about one-third of patients presenting with intestinal obstruction. Plainradiographs are seldom helpful, however a CT scan will usually confirm the diagnosis. Treatment is operative. There isno place for expectant therapy, especially in a patient with pain an parasthesias along the inner aspect of the thigh orwith clinical or radiographic evidence of bowel obstruction. Many surgical approaches have been promoted, but thetransabdominal approach should be used because it has several advantages. It best confirms the diagnosis and exposesthe obturator canal, orifice, vessels, and nerve, also permitting bowel resection when required. The sac is dealt with in astandard fashion. The hernia defect should be repaired, but repair usually requires a polypropylene mesh patch becausethe margin of the defect cannot be approximated primarily.

19. The following statement(s) is/are true concerning umbilical hernias in adults.

a. Most umbilical hernias in adults are the result of a congenital defect carried into adulthoodb. A paraumbilical hernia typically occurs in multiparous femalesc. The presence of ascites is a contraindication to elective umbilical hernia repair.d. Incarceration is uncommon with umbilical hernias

Answer: b

An umbilical hernia in a child is usually considered to be congenital. Only about 10% of umbilical hernias in adults arethought to be the result of a congenital defect carried into adulthood. Most adult umbilical hernias are acquired and arecalled paraumbilical hernias. The paraumbilical hernia typically occurs in a multiparous female. Other patients withincreased intraabdominal pressure, particularly with concomitant chronic abdominal distension as from ascites, are alsoat increased risk for the development of paraumbilical hernias. Umbilical and paraumbilical hernias vary from small toextremely large. Incarceration is frequent in the large hernias, which typically have a small neck.Indications for umbilical hernia repair in adults include symptoms, incarceration, large hernia relative to the neck, and

trophic changes in the overlying skin. Among adults with associated ascites, repair is advocated to avoid potentiallyserious complications. The presence of discoloration or ulceration of overlying skin or a rapid increase in size of theAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomenhernia herald impending rupture. Spontaneous rupture of the hernia in these patients can be catastrophic and isfrequently associated with mortality rates approaching 30%. By comparison, elective umbilical hernia repair can beperformed safely in patients with ascites with acceptable morbidity and mortality.

20. Retroperitoneal fibrosis is a fibrosing condition of retroperitoneum, which is of significance as itgenerally

encompasses the ureters and eventually causes hydronephrosis and kidney damage. Which of the followingstatement(s) is/are true concerning this condition?

a. The majority of cases are idiopathic in natureb. A history of use of methysergide for treatment of migraine headaches would be significantc. There is no known association of malignancy with retroperitoneal fibrosisd. The disease occurs more commonly in women than in men

Answer: a, b

Retroperitoneal fibrosis is a rare condition in which fibrosis develops in the retroperitoneal space. The ureters frequentlywill become encompassed by the process eventually causing hydronephrosis and kidney damage. Retroperitonealfibrosis occurs most commonly in the fifth and sixth decades with a 2:1 male-female predominance. Thepathophysiology of retroperitoneal fibrosis remains to be delineated. In fully two-thirds of cases, retroperitoneal fibrosisis idiopathic, however, an autoimmune process has been suggested as a potential cause. About 12% of cases ofretroperitoneal fibrosis have been associated with the use of methysergide, a serotonin agonist used for vascular andmigraine headache, and in this subgroup females outnumber males 2:1. Primary or metastatic malignancy in theretroperitoneum is found in 8% of patients with retroperitoneal fibrosis. Sarcomas are the most common primarytumors, but non-Hodgkin and Hodgkin lymphomas and ureteral cancer have also been found. Metastases haveoriginated from cancer of the stomach, breast, colon, carcinoid, pancreas, prostate, ovary, and cervix. The focus oftumor may be small but may induce desmoplasia that is grossly indistinguishable from benign variance ofretroperitoneal fibrosis.

21. The following statement(s) is/are true concerning the anterior abdominal wall musculature.

a. The lateral musculature of the abdominal wall consists of three muscle layers. These are, from external tointernal, the external oblique, the transversus abdominis, and the internal oblique muscles

b. The transversalis fascia lies on the deep side of the transversus muscle and extends to form an essentiallycomplete fascial envelope of the abdominal cavity

c. Above the semicircular line, the internal oblique aponeurosis splits into posterior and anterior laminaed. The rectus abdominis muscles originate on the ribs superiorly and on the pubis inferiorly and are clearly

distinct throughout their entire lengthAnswer: b, c

The anterior abdominal wall consists of a group of lateral sheet-like muscles and paired, longitudinally-oriented flatmuscles on either side of the midline. The lateral musculature of the abdominal wall consists of three layers, each ofwhich has its fascicles running in an oblique angle to the others. The most superficial of these lateral muscles is theexternal oblique muscle. The internal oblique muscle lies deep to the external oblique muscle while the transversusabdominis muscle is the innermost of the lateral abdominal wall musculature. The transversalis fascia lies on the deepside of the transversus muscle and extends to form an essentially complete fascial envelope of the abdominal cavity.The semicircular line is defined by the lower edge of the posterior sheath about 3 to 6 cm below the level of theumbilicus, and its convexity is directed superiorly. Above the semicircular line, the internal oblique aponeurosis splitsinto posterior and anterior laminae. The posterior lamina joins with the transversus abdominis aponeurosis to form theposterior rectus sheath. The anterior lamina fuses with the external oblique aponeurosis to form the anterior rectussheath. Below the semicircular line, the internal oblique end transversus abdominis aponeurosis fuse to form an internallamina of the anterior sheath, with the external oblique aponeurosis forming the external lamina of the anterior sheath.The medial paired rectus abdominis muscles originate on the ribs superiorly and on the pubis inferiorly. Below thesemicircular line, the rectus muscles are nearly fused in the midline and indistinct, and their posterior surfaces coveredonly with the transversalis fascia.

22. A 48-year-old woman maintained on Warfarin for a history of cardiac valvular replacement and a history ofrecent upper respiratory infection presents with severe abdominal pain exacerbated by movement. Her physicalexamination shows tenderness in the right paramedian area with voluntary guarding but no peritoneal signs. The

following statement(s) is/are true concerning the diagnosis and management of this patient.

a. Urgent laparotomy should be performed because of concern for arterial mesenteric embolusAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomenb. The correct diagnosis could likely be made by CT scan and operation avoidedc. The status of her anticoagulation should be checked and if her prothrombin time is excessively prolonged,

correction is necessaryd. If untreated, hemodynamic instability is common

Answer: b, c

Rectus sheath hematoma results from arterial or venous bleeding into the rectus sheath, most commonly from arterialbleeding. Rectus sheath hematomas predominate in women by a ratio of about 3:1. The mean age of incidence is in thelate fifth decade. Although spontaneous formation of a rectus hematoma is rare, it can occur with vasculitis, arterialvenous malformations, a severe coagulopathy, or with the administration of anticoagulants. The usual cause is trauma.Events as trivial as sneezing, coughing, or twisting to the side have initiated a rectus hematoma. Abdominal pain isalmost always described at presentation. Pain is often described as severe and usually is exacerbated by movements thatrequire muscular contraction of the abdominal wall. On examination, there is tenderness over the rectus sheath,voluntary guarding, and often a diffuse mass sensation in the area of tenderness. Contraction of the rectus muscleexacerbates the pain and tenderness. Peritoneal signs are absent. Ecchymosis may occur but usually appears severaldays after the onset of pain. In cases where the hematoma dissects or originates inferiorly and expands into theprevessicle and preperitoneal space, the hematocrit may fall significantly; however, hemodynamic instability isdistinctly unusual. When the intraabdominal source of pain is unknown, ultrasound and particularly computedtomography can delineate the hematoma and localize it to the abdominal wall in almost all cases.Treatment must take into consideration the cause, if known, and whether the hematoma is stable or progressive.Coagulopathy should be corrected when possible. For patients in whom the hematoma is stable, pain medication andavoidance of muscular stress on the abdominal wall are sufficient. For patients with progressive hematoma, thetreatment of choice is evacuation of the hematoma from within the rectus sheath and hemostasis, sometimes requiringligation of the epigastric vessels above and below the hematoma.

23. True statements concerning the diagnosis and management of retroperitoneal fibrosis include:

a. Most patients present with dull, non-colicky back, flank, or abdominal painb. Evidence of impaired renal function with an elevated blood urea nitrogen is commonc. The diagnosis is most commonly suggested by intravenous pyelography although contrast studies withCT

scan or MRI are useful in further defining the diseased. Most patients can be managed nonoperativelye. The prognosis for nonmalignant retroperitoneal fibrosis is grim with progression of disease until death

occurring in most patientsAnswer: a, b, c

Ninety percent of patients with retroperitoneal fibrosis present with dull, non-colicky pain in the back, flank, orabdomen. Other symptoms include weight loss, non-specific gastrointestinal complaints, and uncommonly, lowerextremity edema, malaise, and dysuria. Laboratory studies may be normal in 25% of patients, but 55% of patients willhave an elevated blood urea nitrogen. Diagnosis is most commonly suggested by intravenous pyelography. Thecombination of medial deviation of the ureter, hydroureteronephrosis, and extrinsic ureteral compression are highlysuggestive of retroperitoneal fibrosis. CT scanning or MRI can both define the level of ureteral involvement and depictthe mass appearance of the fibrotic process. Exploratory laparotomy with multiple deep biopsies of the retroperitonealprocess is an essential part of diagnosis, since foci of carcinoma may be sparse within the predominately scleroticreaction.Treatment for retroperitoneal fibrosis must identify and deal with potential causative agents, relieve the ureteralobstruction, and reverse the inflammatory-fibrotic process. Renal obstruction may need to be relieved acutely, either byretrograde ureteral stents or by percutaneous nephrostomy tubes. Long-term resolution of ureteral obstruction mostfrequently has been accomplished by operative freeing of the ureters from the fibrosis and displacing them laterally orwithin the peritoneal cavity. Although renal function is improved in more than 90% of cases so treated, in as many asone-third of patients, ureteral obstruction recurs on the ipsilateral or contralateral side. Prognosis for patients withnonmalignant retroperitoneal fibrosis is good. Survivals of 86–100% for several years have been reported.

24. The following statement(s) is/are true concerning incarceration of an inguinal hernia.

a. All incarcerated hernias are surgical emergencies and require prompt surgical interventionb. Attempt at reduction of an incarcerated symptomatic hernia is generally considered safec. Vigorous attempts at reduction of an incarcerated hernia may result in reduction en masse with continued

entrapment and possible progression to obstruction or strangulationd. Incarcerated hernias frequently cause both small and large bowel obstruction

Answer: b, cAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).


Hernia incarceration denotes the condition wherein viscera are contained within a hernia sac and cannot be disgorgedfrom the sac. Patients with an incarcerated hernia may be asymptomatic except for the presence of a bulge. Painassociated with an incarcerated hernia should be interpreted as indicative of strangulation. Many hernias are of such sizethat they cannot be reduced either spontaneously or manually. If the patient is asymptomatic, elective surgery should beplanned. In a patient with pain, attempt at reduction is relatively safe as long as excessive force is not applied. Anincarcerated hernia with discomfort or signs of bowel obstruction is best treated with urgent hernia repair, althoughgentle attempts at reduction may be without consequences. Reduction of a symptomatic hernia may result in reductionof gangrenous bowel into the peritoneal cavity. Reduction of bowel with necrotic areas eventuates in bowel perforationand peritonitis with an associated 10% to 30% mortality and high levels of morbidity. Vigorous attempts at reductionmay result in reduction en masse, in which the viscera remain within the peritoneal sac after reduction with the entiresac and its contained viscera forced through the abdominal wall defect into the preperitoneal layer. Reduction en masseusually occurs when a small fibrous neck traps enclosed viscera and is associated with a high risk of continuedentrapment and progression to obstruction or strangulation.World-wide hernias are the leading cause of intestinal obstruction. The obstruction is almost exclusively small intestinalwith only rarely the colon as the site of obstruction.

25. A careful history is necessary in all patients being considered for inguinal hernia repair. Symptomswhich

deserve investigation and appropriate treatment prior to proceeding with inguinal hernia repair include:

a. Chronic coughb. Urinary hesitancy and strainingc. Change in bowel habitd. A specific episode of muscular straining with associated discomfort

Answer: a, b, c

The history and physical examination are almost exclusively the diagnostic modalities used for diagnosis anddelineation of hernias. Chronic trauma in the form of overstretching of musculoaponeurotic structures is likely to be thesignificant factor in spontaneously occurring hernias. Failure to recognize underlying pathology contributing tosymptoms of abdominal straining may both increase the risk of recurrent hernia as well as miss significant existingpathology. A chronic cough from chronic obstructive pulmonary disease should be investigated and attempts made tocontrol symptoms. Significant obstructive uropathy may warrant urologic consultation and treatment prior to herniarepair. Such treatment is important both to prevent postoperative urinary retention, as well as persistent straining on thenewly-completed repair. Change in bowel habits with constipation or the presence of blood associated with bowelmovements may suggest a rectal or left-sided colon cancer. Patients frequently relate a specific episode of muscularstraining during which a sudden discomfort occurs followed by hernia symptoms of discomfort or a bulge. There is littleevidence to suggest that such a specific acute event can precipitate a hernia. A history of heavy lifting is important,however, in both planning of postoperative disability as well as consideration for long-term recurrence rates.

26. The following statement(s) is/are true concerning abdominal incisional hernias.

a. Large incisional hernias are associated with a high recurrence rate when closed primarilyb. A large potential space remains anterior to the abdominal wall closure in most patients indicating a need for

postoperative wound drainagec. The use of prosthetic mesh can often be avoided by employing relaxing incisions in the anterior fascia parallel

to the midlined. Incisional hernias are frequently associated with a tissue deficit either due to chronic retraction and scarring or

the result of tissue necrosis from either infection or tension at the initial closureAnswer: a, b, c, d

Repair of an incisional hernia can be difficult with several factors making these hernias particularly challenging. First,incisional hernias are often related to a postoperative wound infection, in which case associated fascitis or musclenecrosis may result in loss of tissue. Second, a previous abdominal wall closure under tension or with a technique thatresulted in tension on particular sutures may lead to a multifenestrated region of the musculoaponeurotic abdominalwall near or slightly back from its margin. Third, chronic retraction of the abdominal wall muscles result in a largerdefect. Fourth, a large potential space remains anterior to the abdominal wall closure in the subcutaneous area;postoperative fluid accumulation in this space contributes to the wound infection rate of 5%. Any such potential spaceshould have operatively placed drains.

The key to successful repair involves sufficient dissection and exposure of the true musculoaponeurotic edge andexclusion of adjacent musculoaponeurotic defects and avoidance of closing the wound under tension. Large defectsgreater than 3 to 4 cm in diameter are seldom able to be closed without excessive tension. The use of relaxing incisionsAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomendecreases tension and may be particularly useful in midline hernias and therefore may avoid the need for prostheticmesh.

27. Which of the following structures are derived from the external oblique muscle and its aponeurosis?

a. The inguinal or Poupart’s ligamentb. The lacunar ligamentc. The superficial inguinal ringd. The conjoined tendon

Answer: a, b, c

The external oblique muscle and its aponeurosis, with its inferiorly and medially-directed fascicles and the overlyinginnominate fascia lie deep to the subcutaneous tissue. The inguinal ligament (Poupart’s ligament) is the inferior edge ofthe external oblique aponeurosis and extends from the anterior superior iliac spine to the pubic tubercle, turning underitself posteriorly and then superiorly to form a shelving edge. Medially, the inguinal ligament turns under even furtherto form the lacunar ligament, as part of its insertion on the pubis. The superficial inguinal ring is a triangular opening inthe external aponeurosis, with its apex superiorly in position slightly above and lateral to the pubic tubercle, throughwhich the cord exits the inguinal canal. The conjoined tendon is commonly alluded to in descriptions of inguinal herniarepairs. The conjoined tendon is the fusion of the aponeurosis of the internal oblique and transversus abdominismuscles.

28. A number of special circumstances exist in the repair of inguinal hernias. The following statement(s) is/arecorrect.

a. Simultaneous repair of bilateral direct inguinal hernias can be performed with no significant increased risk ofrecurrence

b. The preperitoneal approach may be appropriate for repair of a multiple recurrent herniac. A femoral hernia repair can best be accomplished using a Bassini or Shouldice repaird. Management of an incarcerated inguinal hernia with obstruction is best approached via laparotomy incision

Answer: b

The approach to bilateral groin hernias is based on the extent of the hernia defect. For hernias for which inguinal floorreconstruction is required (all direct and moderate to large indirect inguinal hernias, all femoral hernias), simultaneousrepair of bilateral hernia results in recurrence of one or both of the hernias twice as frequently as if the hernias wererepaired sequentially. Repair of recurrent inguinal or much less commonly femoral hernias can be repaired via ananterior approach particularly at the time of first recurrence in most cases. If a deficit of aponeurotic tissue exists,methods such as polypropylene mesh as an overlay or preferably as an underlay, and tailored around the spermatic cordhave proved highly successful. The preperitoneal approach also has potential benefits especially in cases of multiplerecurrence where the technique allows avoidance of the inevitable scar encountered with the anterior approach,excellent assessment of the defect, and the ease for placement of synthetic mesh. The Bassini and Shouldice repairsinvolve approximation of the medial tissues of the transversus abdominis aponeurosis and transversalis fascia to theinguinal ligament. These techniques cannot be used to repair a femoral hernia because the femoral canal lies deep to theinguinal ligament. Either the anterior approach of McVay (Cooper’s ligament repair) or a preperitoneal approach ispreferred for femoral hernias. In patients with bowel obstruction attributed to a hernia, the primary operative approachis on the hernia. Assessment of bowel viability is possible without laparotomy in most cases, and release of adhesionsholding the bowel within the sac is more easily accomplished through direct entry into the hernia sac. Reduction of theherniated and incarcerated bowel may be difficult from the intraabdominal approach necessitating a counter incisionover the external presentation of the hernia.

29. Which of the following statements concerning intraperitoneal fluid collections are correct?A. Ascites occurs when either the peritoneal fluid secretion rate increases or the absorption rate decreases.B. Accumulation of lymph within the peritoneal cavity usually results from trauma as tumor involving theintra-abdominal lymphatic structures.C. Choleperitoneum (intraperitoneal bile) generally occurs following biliary surgery, but spontaneous perforation of thebile duct has been reported.D. The most common cause of hemoperitoneum is trauma to the liver or spleen.Answer: ABCD

DISCUSSION: Normally, there is a balance between fluid secretion and absorption in the peritoneal cavity. Ascitesoccurs when either the secretion rate increases or the absorption rate decreases disproportionately. Accumulation ofAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomenlymph in the peritoneal cavity usually results from trauma or tumor involving lymphatic structures. Proposed treatmentregimens range from salt restriction and diuretics to surgical ligation and peritoneovenous shunting. Uninfected bile is amild irritant to the peritoneal cavity and causes increased production of peritoneal fluid, resulting in bile ascities orcholeperitoneum. Most cases of choleperitoneum follow biliary tract surgery, but cases of spontaneous bile ductperforation have been reported in infants and some adults. The most common cause of hemoperitoneum is trauma to theliver or spleen. Less common causes include ruptured ectopic pregnancy, ruptured aortic aneurysms, and other intra-abdominal injuries.

30. The following statement about peritonitis are all true except:A. Peritonitis is defined as inflammation of the peritoneum.B. Most surgical peritonitis is secondary to bacterial contamination.C. Primary peritonitis has no documented source of contamination and is more common in adults than in children andin men than in women.D. Tuberculous peritonitis can present with or without ascites.Answer: C

DISCUSSION: Peritonitis is inflammation of the peritoneum and can be septic or aseptic, bacterial or viral, primary orsecondary, acute or chronic. Most surgical peritonitis is secondary to bacterial contamination from the gastrointestinaltract. Primary peritonitis refers to inflammation of the peritoneal cavity without a documented source of contamination.It is more common in children than in adults and in women than in men. The female predominance is felt to beexplained by entry of organism into the peritoneal cavity through the fallopian tubes. The clinical manifestations oftuberculous peritonitis are of two types. The moist form consists of fever, ascites, abdominal pain, and weakness. Thedry form presents in a similar manner but without ascites.

31. True or false?A. Mesenteric cysts are most often due to congenital lymphatic spaces that gradually fill with lymph.B. Mesenteric cysts usually present as abdominal masses accompanied by pain, nausea, or vomiting.C. Mesenteric cysts are best treated by marsupialization.D. Omental cysts are frequently asymptomatic unless they undergo torsion.Answer: A-TRUE, B-TRUE, C-FALSE, D-TRUE

DISCUSSION: Mesenteric cysts are most often due to congenital lymphatic spaces that gradually enlarge as they fillwith lymph. They generally present as abdominal masses accompanied by pain, nausea, and vomiting. They usually canbe diagnosed by physical examination and have characteristic lateral mobility. They are best treated by surgicalexcision, and intestinal resection may be necessary for complete removal. Omental cysts are frequently asymptomaticbut may present with vague discomfort or as a mobile abdominal mass that can cause torsion of the omentum. Torsiongenerally presents with signs and symptoms compatible with acute cholecystitis, appendicitis, or a twisted ovarian cyst.Treatment entails local resection.

32. Which of the following statements about acute salpingitis are true?A. The disease rarely occurs after menopause.B. Gonococcal infection is most common.C. There is minimal cervical tenderness to palpation.D. Vaginal discharge occurs rarely.Answer: AB

33. Acute appendicitis is most commonly associated with which of the following signs?A. Temperature above 104 F.B. Frequent loose stools.C. Anorexia, abdominal pain, and right lower quadrant tenderness.D. White blood cell count greater than 20,000 per cu. mm.Answer: C

34. Which of the following most often initiates the development of acute appendicitis?A. A viral infection.B. Acute gastroenteritis.C. Obstruction of the appendiceal lumen.D. A primary clostridial infection.

Answer: C


Abdominal wall & acute abdomenDISCUSSION: The majority of patients with acute appendicitis have an obstructed lumen that is due to eitherhyperplasia of the lymph follicles in the wall of the appendix or a fecalith. The obstruction creates a site where thebacteria in the lumen multiply rapidly, producing exotoxins and endotoxins that then ulcerate the mucosa, allowingpathogenic organisms to enter the wall of the appendix. An inflammatory process follows that can extend to the serosa,and penetration through the serosal layer causes generalized peritonitis.

35. The diagnosis of acute appendicitis is most difficult to establish in:A. Persons aged 60 and older.B. Women aged 18 to 35.C. Infants younger than 1 year.D. Pregnant women.Answer: C

DISCUSSION: It is very difficult to establish a firm diagnosis of acute appendicitis in an infant of 1 year or youngersince the patient cannot provide a history or be helpful during the physical examination. It is rare to make a definitivediagnosis preoperatively in such infants, and in such cases the appendix is usually perforated at the time of operation.While appendicitis is somewhat more difficult to diagnose in the elderly because of the reduced response toinflammation; nevertheless, it is usually possible to make the diagnosis. With pregnant women it is wise to rememberthat the enlarging uterus in the last trimester dislocates the appendix higher in the abdomen and that the signs andsymptoms follow this anatomic shift accordingly.

36. Once a diagnosis of acute appendicitis has been made and appendectomy decided upon, which of the followingis/are true?A. Prophylactic antibiotics should be administered.B. Prophylactic antibitics are not necessary unless there is evidence of perforation.C. If the appendix is not ruptured and not gangrenous, antibiotics may be discontinued after 24 hours.D. Multiple antibiotics are in all cases preferable to a single agent.Answer: AC

DISCUSSION: It is generally held that patients with a diagnosis of acute appendicitis should receive antibiotics such ascefoxitin or cefotetan. Administration can be discontinued after 24 hours if the appendix is not gangrenous or ruptured.Multiple antibiotics are unnecessary in straightforward cases.

37. The best type of x-ray to locate free abdominal air is:A. A posteroanterior view of the chest.B. A flat and upright view of the abdomen.C. Computed tomograph (CT) of the abdomen.D. A lateral decubitus x-ray, right side up.Answer: D

38. The most helpful diagnostic radiographic procedure in small bowel obstruction is:A. CT of the abdomen.B. Contrast study of the intestine.C. Supine and erect x-rays of the abdomen.D. Ultrasonography of the abdomen.Answer: C

39. The most commonly used imaging method for diagnosis of acute cholecystitis is:A. CT of the abdomen.B. Ultrasonography of the gallbladder.C. Oral cholecystogram.D. Radionuclide (HIDA) scan of the gallbladder.Answer: B

40. Acute salpingitis occurs most often:A. After menopause.B. In patients with unilateral lower abdominal pain.C. During the menstrual cycle.

D. In patients with cervical tenderness and vaginal discharge.Answer: DAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

41. Meckel's diverticulitis most often occurs in the:A. Proximal jejunum.B. Distal jejunum.C. Proximal ileum.D. Distal ileum.Answer:D


42. A patient is seen in the emergency room with reproducible right lower quadrant tenderness. Theapproximate

incidence of finding a normal appendix on right lower quadrant exploration in similar nonselected patients is whichof the following:

a. 5%b. 10%c. 20%d. 40%

Answer: c

Appendectomy is the most common surgical procedure performed on an emergency basis in Western medicine.Appendicitis has a negative appendectomy rate of approximately 22% to 26% in broad based reviews. The perforationrate is as low as 3.6% in a subset of young males, although this rises substantially when the children or the elderly areincluded. Likewise, young females represent a group at particularly high risk for other intraabdominal pathology.

43. Of adult patients presenting to the emergency room for evaluation of acute abdominal pain, which one of thefollowing answers includes the most common diagnoses?

a. Urologic problems, cholelithiasis, pelvic inflammatory diseaseb. Mittelschmerz, appendicitis, ureterolithiasisc. Nonspecific abdominal pain, appendicitis, intestinal obstructiond. Appendicitis, pelvic inflammatory disease, perforated ulcer

Answer: c

Numerous surgical causes exist for the patient presenting with acute abdominal pain. A recent review of nearly 1200patients presenting for emergency evaluation of abdominal pain affords some interesting findings. The most commondiagnosis was nonspecific abdominal pain, occurring in 35% of patients. Appendicitis (17%), intestinal obstruction(15%), urologic problems (6%), and gallstones (5%) were the leading surgical causes. The largest number of admissionsoccurred in the age groups 10–29 years old (31%) and 60–79 years old (29%). Surgical procedures were required in47% of these patients. Large series of elderly patients presenting with acute abdominal pain have found the leadingdiagnoses to be cholelithiasis, nonspecific pain, malignancy, incarcerated hernia, ileus, and gastroduodenal ulcer.

44. Nonsurgical causes of acute abdominal pain may include which of the following?

a. Hyperthyrodismb. Adrenal insufficiencyc. Pneumoniad. Diabetic ketoacidosis

Answer: b, c, dMany nonsurgical problems cause acute abdominal pain. A partial listing is provided above. Of the choices in question,the only one that is not associated with acute abdominal pain is hyperthyroidism. The remainder cause abdominal painthrough a variety of mechanisms, both direct and indirect.NONSURGICAL CAUSES OF THE ACUTE ABDOMEN

METABOLICDiabetic ketoacidosisPorphyriaAdrenal insufficiencyUremiaHypercalcemia

TOXICInsect bitesAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Venoms (scorpion, snake)Lead poisoningDrugs

MISCELLANEOUSHemolytic crisesRectus sheath hematoma

NEUROGENICHerpes zosterAbdominal epilepsySpinal cord tumor, infectionNerve root compression

CARDIOPULMONARYPneumoniaMyocardial infarctionMyocarditisEmpyemaCostochondritis

45. Which of the following cause visceral pain from the abdominal organs?

a. Stretching and contractionb. Traction, compression, torsionc. Cuttingd. Certain chemicals

Answer: a, b, d


Abdominal pain can be divided into three categories; visceral, somatic, and referred. The intramural sensory receptorsof the abdominal organs are responsible for visceral pain. A diverse group of destructive stimuli to the abdominalviscera are painless. For example, almost all abdominal organs are insensitive to pinching, burning, stabbing, cutting,and electrical and thermal stimulation. The same is true for the application of acid and alkali to normal mucosa.The general classes of visceral stimulation that result in abdominal pain include: (1) stretching and contraction; (2)traction, compression, and torsion; (3) stretch alone; and (4) certain chemicals. Mediating receptors for these responsesare located intramurally in hollow organs, on serosal structures such as the visceral peritoneum and capsule of solidorgans, within the mesentery and the mucosa. These receptors are polymodal, or responsive to both mechanical andchemical stimuli. Mucosal receptors respond primarily to chemical stimulation. Visceral pain almost always heraldsintra-abdominal disease but may not indicate the need for surgical therapy. When visceral pain is superceded by somaticpain, the need for surgical intervation becomes likely.

46. Factors which may influence the clinical presentation of intraabdominal pathology include which of the following?

a. Pregnancyb. Oral anticoagulantsc. Aged. HIV infection

Answer: a, b, c, d

A variety of conditions influence the presentation of intraabdominal pathology. Pregnancy is among these, principallybecause of displacement of adjacent normal viscera and therefore a shift in the location of the parietal pain. Oralanticoagulation is associated with the development of spontaneous intramural hematomas of the bowel causing pain butnot requiring surgical resection. This pain may be confused with a variety of other intraabdominal emergencies.Age is likewise a confounding factor, generally in infancy and in the elderly. In these age groups, the symptoms may beless pronounced and the presentations occur later in the course of disease.Immunocompromised patients are a heterogenous group that includes those receiving allografts, chemotherapy,immunosuppressive drugs for autoimmune disorders, and individuals with the acquired immunodeficiency syndrome(AIDS). This group has a variety of specific abdominal complications that must be appreciated and suspected by theevaluating physician.

ACUTE ABDOMINAL PAIN ASSOCIATIONS IN THEIMMUNOCOMPROMISED PATIENTAsir Surgery MCQs Bank. © 1422H-2002- first impression ©This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

CYTOMEGALOVIRUS INFECTIONInterstitial pneumonitisMononucleosisPancreatitisHepatitisCholecystitisGastrointestinal ulceration

PANCREATITISSteroidsAzathioprineCytomegalovirusPentamidine

HEPATITISHepatitis A, B, and CCytomegalovirusEpstein-Barr virus

CHOLECYSTITISCytomegalovirusAcalculous cholecystitisCampylobacter

HEPATOSPLENIC ABSCESSFungalMycobacterialProtozoalSplenic rupture

BOWEL PERFORATIONLymphoma, leukemia (especially after chemotherapy)CytomegalovirusColon ulcersKaposi sarcomaPseudomembranous colitisMycobacterialatrogenic

ACUTE GRAFT-VERSUS-HOST DISEASE

PSEUDOACUTE ABDOMEN

FECAL IMPACTION

STANDARD ABDOMINAL PROCESSESAppendicitisCholecystitisDiverticulitisBowel obstructionUlcer diseasePelvic inflammatory diseasePerirectal abscessUrinary tract infectionLymphadenitis

NEUTROPENIC ENTEROCOLITIS


47. Prospective studies have shown incidental appendectomy to be advantageous in which of the following

patientgroups?


Abdominal wall & acute abdomena. Children undergoing staging laparotomy for malignancy who are then to enter chemotherapyb. HIV infected patientsc. Patients over 50 years of aged. Patients with spinal cord injuriese. None of the above

Answer: e

Several studies have looked at incidental appendectomies in a variety of populations. The deficiency in all past studiesof this issue is the lack of prospective long-term trials to assess the true cost and benefit.Incidental appendectomy is clearly not indicated in the elderly and in patients undergoing laparatomy for staging ofHodgkin’s disease. These two specific groups have been shown to have increased perioperative risks with incidentalappendectomy. No prospective studies have addressed the issue of HIV infected or spinal cord injured patients. Whileincidental appendectomies may be performed safely in general, it is difficult to justify any increase in operative riskwithout demonstrable benefit.

48. Visceral pain is typically:

a. Well localizedb. Sharpc. Mediated via spinal nervesd. Perceived to be in the midline

Answer: d

Peritoneum is a continuous visceral and parietal layer. The nerve supply to each layer is separate. The visceral layer,i.e., the layer surrounding all intraabdominal organs, is supplied by autonomic nerves (sympathetic andparasympathetic) and the parietal peritoneum is supplied by somatic innervation (spinal nerves). The pathways relayingthe sensation of pain differ for each layer and differ in quality as well. Visceral pain is characteristically dull, crampy,deep, aching and may involve sweating and nausea. Parietal pain is sharp, severe and persistent. Visceral organs havevery little pain sensation, but stretching of the mesentery and stimulation of the parietal peritoneum cause severe pain.Normal embryologic development of the abdominal viscera proceeds with bilateral midline autonomic innervation thatresults in visceral pain usually being perceived as arising from the midline. Epigastric pain is typical of foregut origin.Periumbilical pain signifies pain emanating from the midgut. Hypogastric or lower abdominal midline pain indicates ahindgut origin.

49. True statements regarding the pathophysiology of acute appendicitis include which of the following:

a. Fecaliths are responsible for the disease process in approximately 30% of adult patientsb. Lymphoid hyperplasia is a rare cause of appendicitis in young patientsc. Clostridium difficile is implicated as a pathogenic organismd. Carcinoid tumors account for approximately 5% of all cases of acute appendicitis

Answer: a

The most common cause of appendicitis is obstruction of the appendiceal lumen. In young children and young adults,the most common cause of lumenal obstruction is lymphoid hyperplasia from the submucosal follicles which areabundant. Lymphoid hyperplasia accounts for 60% of acute appendicitis in the young. In adults, fecalith formationaccounts for approximately 30% of acute appendicitis. There is no known causative relationship of Clostridium difficileor other specific organisms with acute appendicitis. The normal flora of the appendix is consistent with that of theadjacent cecum.Neoplasms of the appendix are rare, occurring in 1% to 1.3% of all appendectomy specimens. Carcinoid tumors are themost common, followed in frequency by benign and malignant mucoceles.

50. A 26-year old woman in her first trimester of pregnancy presents with a 2-day history of right lower quadrant painand fever. Physical examination reveals a tender, palpable, right lower quadrant mass. There is no evidence ofperitonitis or systemic sepsis. Laboratory evaluation is remarkable for mild leukocytosis, and abdominal ultrasounddemonstrates an inflammatory mass but no evidence of abscess. As the surgeon on call, your recommendationwould be:

a.b. Intravenous hydration, antibiotic prophylasis, and urgent appendectomy

c. Intravenous hydration, antibiotics, bowel rest, and interval appendectomy in 4 to 6 weeksd. Intravenous hydration, antibiotics, and appendectomy if no improvement in 12 to 24 hours


Abdominal wall & acute abdomene. Intravenous hydration, antibiotics, and interval appendectomy when fever has subsided, leukocyte count has

returned to normal, and the patient is pain freef. Emergent obstetrical consultation for evaluation and treatment of possible ectopic pregnancy

Answer: a

The patient presented has a perforated appendix with a phlegmon, but no abscess. One must routinely provideresuscitation and broad spectrum antiobiotic coverage in this circumstance. As she is not systemically toxic, it would berational in a nonpregnant patient to treat this patient nonoperatively initially and follow this with intervalappendectomy. However, in this circumstance, the risk of preterm labor associated with anesthesia and pelvicinflammation increases with more advanced gestation, so the best decision is to proceed with intravenous hydration,broad spectrum antibiotic coverage and urgent appendectomy.

51. True statements regarding appendiceal neoplasms include which of the following?

a. Carcinoid tumors of the appendix less than 1.5 cm are adequately treated by simple appendectomyb. Appendiceal carcinoma is associated with secondary tumors of the GI tract in up to 60% of patientsc. Survival following right colectomy for a Dukes’ stage C appendiceal carcinoma is markedly better than that

for a similarly staged colon cancer at 5 yearsd. Mucinous cystadenocarcinoma of the appendix is adequately treated by simple appendectomy, even in patients

with rupture and mucinous ascitese. Up to 50% of patients with appendiceal carcinoma have metastatic disease, with the liver as the most common

site of spreadAnswer: a

Carcinoids represent two-thirds of all appendiceal neoplasms. Nearly half of all GI carcinoids arise in the appendix at amean age of 41 years. Two-thirds of the time the carcinoid is only incidentally detected, only 0.5% have evidence ofdistant metastatic spread at resection. In one experience, carcinoids between 1.5 and 2.0 cm have had minimalmetastatic potential and those smaller than 1.5 cm never metastasized. In the 1% that are larger than 2 cm however,metastases are frequent and 80% recur even after resection at this size.Adenocarcinoma of the appendix is exceedingly rare. These tumors occur in elderly patients at the base of the appendix.Appendicitis often follows and the diagnosis is not made preoperatively and is rarely considered during surgery sincethe appearance of the tumor may mimic perforated appendicitis. Up to half the patients have metastatic disease atdiagnosis and the peritoneum is the most common site of spread. Survival is proportional to tumor stage. Dukes’ StageA disease may be treated simply with appendectomy if all disease can be removed with reasonable margins. Dukes’ Band C lesions require formal right hemicolectomy for disease control. Survival is, stage for stage, similar to coloncancer after 5 years. Appendiceal adenocarcinomas also appear to have an association with secondary tumors, often ofthe GI tract, in up to 35% of patients.Patients with mucinous cystadenocarcinoma of the appendix typically are symptomatic, and wide resection of theprimary disease, together with debulking of peritoneal implants, is indicated. Indolent progression of metastasescommonly results in prolonged survival rates (50% at 5 years) during which patients may require repeated laparatomiesfor complications of the disease.

Asir Surgery MCQs Bank. © 1422H-2002- first impression ©

This project was raised after an idia by Dr. Gharama Al-Shehri (consultant surgeon). Developed and typed by Dr. Ghazi Al-Shumrani (intern).

Abdominal wall & acute abdomen

Health & Medicine

Transcript of Abdominal wall & acute abdomen