CANCER TREATMENT RELATED ABDOMINAL IMAGING EFFECTS ... · COMPLICATIONS OF THERAPY Neutropenic...
Transcript of CANCER TREATMENT RELATED ABDOMINAL IMAGING EFFECTS ... · COMPLICATIONS OF THERAPY Neutropenic...
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CANCER TREATMENT RELATED ABDOMINAL IMAGING
EFFECTS & COMPLICATIONS
Isaac R Francis, M.B; B.S University of Michigan Hospitals
Ann Arbor, Michigan
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Acknowledgements
Drs. A. Balachandran, P. Bhosale and C. Viswanathan
MD Anderson Cancer Center Houston, Texas
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COMPLICATIONS OF THERAPY Gastrointestinal Complications
• Small bowel & colon � Graft vs. host disease � Neutropenic enterocolitis � Infectious Colitis(C-Difficile) � Pneumatosis � Ischemic colitis � GI tract perforation � GI tract bleeding
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Graft Versus Host Disease
• Occurs in patients who have undergone bone marrow and stem cell transplant
• T lymphocytes from donor bone marrow cause selected epithelial damage of recipient target organs
• Incidence: 30-70% patients with allogeneic transplant
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Graft Versus Host Disease • Occurs in acute and chronic forms • Used to be defined based on time- if
within 100 days of transplant, termed “acute” and if after 100 days -“chronic”
• Multisystem attack of donors immune systems against recipient’s tissues
• Usually manifests as skin rash, also affects the gastrointestinal system and less commonly the respiratory system
* Mahgerefteh SY et al. Radiology 2011
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Graft Versus Host Disease
Acute GHVD Chronic GHVD Rash Skin and hair changes Nausea and vomiting Dry eyes and mouth
Abdominal Pain Lichenoid changes Diarrhea GE reflux Weight loss Dysphagia Cholestatic Jaundice Diarrhea Liver dysfunction Anorexia/weight loss Pulmonary * Mahgerefteh SY et al. Radiology 2011
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Graft Versus Host Disease GI tract involvement
• Bowel wall thickening- moderate- not as marked as in neutropenic enterocolitis, c.diff. colitis
• Usually small bowel involved • Mucosal enhancement- much more common
than in neutropenic enterocolitis • If barium used as oral contrast, mucosal
ulceration may lead to intramural trapping of barium
• Separation of bowel loops and dilatation of small bowel and colon can be also seen
* Mahgerefteh SY et al. Radiology 2011
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Graft vs. Host Disease (GVHD)
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Graft vs. Host Disease (GVHD) with GI tract Involvement- Small bowel & Colon
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GVHD vs. other GI complications • 0-30 days - Typhilitis- Neutropenic enterocolitis • Moderate bowel wall thickening- usually right colon
but can affect small bowel also - C. difficile colitis- • Marked bowel wall thickening- limited to colon - 31-100 days - Viral - • Moderate bowel thickening- Ileocecal and asc. Colon • Pneumatosis • > 100 days - Post-transplant lymph proliferative disorder (PTLD) • Lymph node enlargement, bowel wall nodularity and
thickening * Mahgerefteh SY et al. Radiology 2011
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COMPLICATIONS OF THERAPY Neutropenic Enterocolitis
• Triad: Neutropenia, temp. >38.3 C, and evidence of colitis
• Abd. pain and distension, diarrhea, GI hemorrhage • Usually occurs between 5-14 days after onset of
therapy • Usually affects right colon –”typhilitis” but can
affect any segment of colon and small bowel • See in leukemia, now also seen in pts. with
lymphoma, and ovarian, and non-small cell lung cancer
• Can also be seen in Tx. Patients and those with AIDS
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COMPLICATIONS OF THERAPY Neutropenic Enterocolitis
• Most common GI side effect of chemotherapy
• Paclitaxol, taxotere, cisplatin/carcboplatin and cytsosine
• Treatment: Aggressive medical support (bowel rest, NG suction, IV fluids, pressors as needed, antibiotic therapy)
• Surgical therapy if there is GI hemorrhage, perforation , or ischemia
• Reported mortality rates are between 21-48%
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NEUTROPENIC ENTEROCOLITIS
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NEUTROPENIC ENTEROCOLITIS
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COMPLICATIONS OF THERAPY Infectious Colitis (Pseudomembranous)
• Frequently seen in pts. undergoing chemotherapy or antibiotic therapy
• C. Difficile produces a cytotoxin and an enterotoxin
• Mural thickening, mucosal and submucosal edema, leading to “target/double-halo sign”, or “accordion sign”
• Degree of mucosal thickening is usually more severe than in other colitides
• Usually self-limiting, and managed with supportive therapy
• Rarely surgery is needed
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INFECTIOUS COLITIS • C. Difficile colitis- caused by Gram +
organism- associated with use of antibiotics
• Diarrhea and abdominal pain • Accounts for 15-25% of pts. with
antibiotic associated diarrhea • Complications: Toxic megacolon and
perforation • Cell toxicity assay most reliable • Stool cultures and tests for toxins
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PANCOLITIS-C-Difficile
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COMPLICATIONS OF THERAPY Neutropenic Enterocolitis vs. Infectious
colitis
• Wall thickening is more pronounced in infectious colitis (c.diff)
• If seen in distribution of small bowel and colon, more likely to be neutropenic colitis
• Ascites and peritoneal stranding seen more often with infectious colitis
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Pneumatosis
• Mucosal and submucosal bowel damage allows intraluminal air to enter damaged bowel wall
• With bone marrow transplant it may be related to the chemo agents themselves
• Also reported secondary to diverticulitis, GVHD, UC, Crohn, gastric and colon CA
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PNEUMATOSIS DUE TO PERMEABILITY
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COMPLICATIONS OF THERAPY GI Perforation
• Spontaneous tumor rupture, or related to therapy
• Maybe related to therapy- such as Taxol, cytosine, CHOP, 5 FU, cisplatin and mitomycin
• More recently cytokine interleukin IL-2, and bevacizumab (Avastin) have also been shown to cause perforation
• Also causes hemorrhage, fistulas and abscesses
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Advanced metastatic colon cancer Treated with Xeloda and Avastin
PERI-APPENDICEAL PERFORATION
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COMPLICATIONS OF THERAPY Radiation Therapy-Small bowel and Colon
• Small bowel most sensitive- due to rapid mucosal turnover
• Rectum is least sensitive-but often affected due to:
- a) due to fixed position in pelvis - b) relationship to adjacent organs which
harbor several radiosensitive cancers • Radiation enteropathy can be acute or
chronic
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COMPLICATIONS OF THERAPY Radiation Therapy-Small bowel
• Acute radiation enteropathy- usually transient • Seen usually in 2-3 weeks following therapy • Usually seen as small bowel mucosal
enhancement, wall thickening and ileus • Chronic enteropathy- can be seen months (8-
12 mths.) to years following therapy • Can cause strictures, and lead to fistula • Seen as wall thickening, strictures, tethering
of bowel loops, and rarely fistula formation
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Bx- Treatment related mucosal injury affecting small bowel and colon
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COMPLICATIONS OF THERAPY Radiation Therapy-Rectum & Colon
• Acute radiation colitis- usually transient • Seen usually during therapy • Tenesmus, bleeding, cramping, diarrhea • Chronic radiation colitis- can be seen
months (mean=9 mths.) following therapy • Presents with diarrhea, bleeding, and pain • Can lead to wall thickening, stricture,
fistulae and abscess
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Clinical T4 muscle invasive urothelial carcinoma underwent chemo RT
RADIATION PROCTITIS
Advanced rectal carcinoma underwent chemo RT
RADIATION-INDUCED RECTOVESICALFISTULA