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Transcript of Breast Viability and Pathology - SRJCsrjcstaff.santarosa.edu/~xho/Mammo/Unit 2 - Breast Viability...
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Breast Viability and PathologyUnit 2
Bonnie A. Barnes,BA, R.T.(R)(M)(CT)(f)Xuan Ho, Ph.D., R.T. (R)
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Content
Developmental Stages of Breast Tissue Hormonal Influences Breast Augmentation or Reconstruction Breast Anomalies Physical Changes Due to Pathology Mammographic Appearance Pathology Breast Carcinomas Benign Breast Pathology
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Developmental Stages of Breast Tissue Fetal breasts have no glandular breast tissue, thus are
completely fatty.
At puberty, the nipple develops with an areola around it, as well as glandular tissue, forming the breast.
During pregnancy, women’s breasts change due to hormones, causing them to become larger.
During the stage of lactation, women’s breasts are more engorged, due to the milk being produced.
During menopause, women are losing estrogen, breasts become more fatty and less glandular.
During post menopause, women’s breasts lose their elasticity.
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Primarily fatty breast with
scattered islands of fibroglandular
tissue
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Extremely dense breast
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Hormonal Influences There are five main types of hormones that
influence the growth of glandular breast tissue. They are:-Birth control pills-Estrogen-Progesterone-Prolactin-Testosterone
These hormones can create the look and feel of a person who still menstruates.
Thyroid medications may also contribute to this indirectly.
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Breast Augmentation or Reconstruction
Breast augmentation makes mammography very difficult to achieve. This surgery is performed for aesthetic or post cancer resection purposes.
Implants can be placed either behind or in front of the pectoralis muscle.
If the implant is placed behind the muscle, the breast tissue is not compromised on a mammogram.
There are two main types of implants.-Silicone -Saline
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Breast Augmentation or Reconstruction
Patient had breast cancer on her left breast, and had a lumpectomy. She then had augmentation performed.
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Silicon Implant
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CXR with saline implants
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Architectural Distortion
The appearance on a mammogram of tissue spicules without an associated mass
Caused by scarring from previous surgery, radial scar, and carcinoma.
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Invasive carcinoma presenting as a subtle architectural distortion
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Breast Anomalies Asymmetry of breasts can be seen on
mammograms. An area on one breast can present more
density than the same area on the contralateral breast.
When asymmetry is associated with architectural distortion, calcifications, or an underlying mass, the probability of malignancy is greater and a biopsy should be considered.
6-month follow-up
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Inverted nipples are located inside the breast tissue and do not protrude outward.
This anomaly can be a sign of breast cancer, or a benign condition.
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Accessory nipples are sometimes found right next to the nipple, or on another location of the chest.
These are benign conditions.
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Nipple rings
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Physical Changes Due to Pathology
Pain Lumps Thickening Discharge Skin changes Nipple and areola changes Edema Erythema Dimpling
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Discharge
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Mammographic Pathology
MassesCalcificationsNodulesOther indicators of Pathology
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Masses
This pathology is determined by its shape, margins, benign characteristics, and malignant characteristics.
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Masses
Shape of masses can have an appearance of: Round or Oval: signifying a possible fluid
filled cyst, or a solid mass. Lobulated or Irregular: signifying a possible
cancer, more so than a benign cyst. Architectural distortion: tissue overlapping
on itself, or a possible cancer.
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Masses
Margins of significant pathology masses can be:
circumscribed (could be benign or ….) obscured or indistinct ill-defined (indistinct, possibly cancer) spiculated (cancerous)microlobulated (could be cancerous)
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Benign form is mostly cyst
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• well circumscribed
• fibroadenoma
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• indistinct
• invasive ductal carcinoma
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• spiculated
• invasive ductal carcinoma
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Masses
Masses of benign characteristics can be: encapsulation low density (fat content)mixed density (fat and fluid)well circumscribed
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• low density
• fibroadenoma
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• low to intermediate density
• cyst
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• high density
• ductal carcinoma
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Masses
Masses of malignant characteristics can be:
Spiculated high density low density indistinct
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Calcifications
Characteristics Benign characteristics (typical)Malignant characteristics
(nondeterminate characteristics)
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CalcificationsCharacteristics are determined by: number (quantity) Size ShapeDistribution: clustered or grouped, segmental, regional, diffuse (scattered), or multiple groups
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Calcifications
Group of calcifications
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Calcifications Benign characteristics of calcifications are
regional: Coarse rim or eggshell milk of calcium (teacup-like) Dystrophic Vascular skin (superficial) Secretory fat necrosis punctate
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Ductal rod-like calcifications
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Milk of calcium or teacup calcifications
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Coarse calcifications on the rim of a fibroadenoma
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Calcifications
Malignant are diffused and scattered:- Indistinct (amorphous)- Granular (clustered and pleomorphic)- Irregular- Casting
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• Indistinct or amorphous calcifications
• immediate concern
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• clustered
• pleomorphic
• malignancy
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• casting
• fine, linear, and branching
• intraductal carcinoma
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• Segmental distribution of fine, linear, branching calcifications
• Intraductal comedocarcinoma
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Other Indicators of Pathology
Contour changes Prominent ductal pattern Prominent venous or arterial pattern Skin changes
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Breast Carcinomas
Postulated development of breast cancer
Pathological types Stromal cancerOtherDiagnosis of breast carcinoma TNM classification of breast cancer
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Postulated Development of Breast Cancer
Epithelial hyperplasia (pre-cancerous)
Atypical epithelial hyperplasia (pre-cancerous)
Carcinoma in situ (small cancerous area found, but not spread)
Invasive carcinoma (cancerous and spread to other areas)
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Carcinoma
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Intraductal carcinoma fibroadenoma
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Pathological Types
Ductal carcinomas-medullary (neoplastic epithelial cells)-mucinous (adenocarcinoma produces mucin)-tubular-inflammatory-comedo (plugs of malignant cells produced from ducts)
Lobular Paget disease (ductal carcinoma with eczematic nipple changes)
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Stromal Cancer
Sarcoma Very rare (1 %) cancerous connective tissue of the breast
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Other Breast Carcinomas
Lymphoid malignancy (breast cancer spread to the lymphatic system)
Metastatic to the breast from other primary cancer
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Intracystic papillary carcinoma
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Diagnosis of Breast Carcinoma
Fine-needle aspirationCore biopsy Surgical biopsy
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Needle Biopsy
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Open Core Biopsy
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TNM Classification of Breast Cancer
(Tumor): Primary Tumor-Clinical exam (physician)-Diagnostic exam (mammogram/ultrasound/MRI)-Surgery-Post surgical treatment-Re-treatment (radiation/chemotherapy)-Autopsy
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TNM Classification of Breast Cancer
(Node): Subclasses-Regional lymph node involvement-Regional lymph node metastasis-Increasing degree of demonstrable lymph
node abnormalities
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TNM Classification of Breast Cancer
(M): Metastasis-No evidence (not palpable or visual
changes)-Evidence of distant metastasis-Assessment of distant metastasis cannot be
met
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Benign Breast Pathology Cyst Galactocele Fibroadenoma Lipoma Hamartoma (fibroadenolipoma) Papilloma Ductal ectasia Breast infection Abscess Hematoma Fat Necrosis Inflammation vs. Inflammatory cancer Radial scarring
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Benign Breast Pathology
Cyst:-It is an abnormal sac containing gas, fluid or semisolid material.-It appears as round or oval well-circumscribed masses, on a mammogram.-Fine needle aspiration may be attempted, if the cysts are causing discomfort.
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Cyst
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Benign Breast Pathology
Galactocele: It is a retention cyst caused by occlusion of a
lactiferous duct. It develops during lactation. It appears on the mediolateral projection as a
fat/fluid level of fluid calcium level, a zone of water density in the inferior portion, and a fat density in the superior portion.
No treatment needed.
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Benign Breast Pathology Fibroadenoma:
A benign neoplasm derived from glandular epithelium, in which there is a conspicuous stroma of proliferating fibroblasts and connective tissue elements.
This lesion represents the most common form of benign tumors of the breast.
It is seen on mammograms as well-circumscribed masses with round, oval or nodular borders.
No treatment is required.
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Benign Breast Pathology
Lipoma A benign neoplasm of adipose tissue,
comprised of mature fat cells. It is seen on a mammogram as a totally
fatty circumscribed mass contained in a thin fibrotic capsule.
No treatment is necessary.
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Benign Breast Pathology
Hamartoma (fibroadenolipoma): A focal malformation that resembles a neoplasm,
but results from faulty development in the breast. On a mammogram, a hamartoma contains
multiple areas of fatty and fibroglandular densities surrounded by a fibrotic pseudocapsule.
If the appearance is typical, excision can be avoided, otherwise surgery may be necessary.
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Hamartoma
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Benign Breast Pathology
Papilloma It is a circumscribed benign epithelial
tumor projecting from the surrounding surface. It usually occurs in the retroareolar region and may cause a serous or sanguineous nipple discharge.
On a mammogram it is usually no greater that several millimeters in size.
No treatment is necessary.
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Papilloma
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Galactography
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Benign Breast Pathology
Ductal Ectasia (secretory disease): A dilation of a duct characterized by inspissated
secretions, and a chronic interstitial inflammatory reaction involving the intermediate and larger ducts of the breast.
On a mammogram, it may manifest as thick, solid calcifications, which represent benign secretions within the ducts, or ring-like calcifications with lucent centers, which represent calcifications within the walls of the dilated ducts.
No treatment necessary.
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Ductal Ectasia
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Benign Breast Pathology
Breast infection A benign breast pathology and is an
infection of microorganisms that have multiplied inside of the breast.
The breast may have an appearance of redness and swelling. The patient may feel pain and have a fever.
Treatment for this may be antibiotics.
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Benign Breast Pathology
Abscess It is a circumscribed collection of purulent fluid
appearing in an acute or chronic localized infection of the breast.
It is usually caused by Staphylococcus or Streptococcus and may appear as a spiculated or poorly defined mass.
Treatment for this is an ultrasound-guided breast biopsy, to drain the fluid, and send it to pathology.
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Benign Breast Pathology Hematoma
A localized mass of extravasated blood that is relatively or completely confined within the breast. The blood is usually clotted, and, depending on how long it has been there, may manifest various degrees of discoloration.
It may appear on a mammogram as a well-defined or poorly defined mass.
Treatment for this is an ultrasound guided fine needle aspiration, to confirm diagnosis, if the blood has not clotted.
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Benign Breast Pathology
Fat necrosis The death of adipose tissue, characterized by the
formation of small (1 to 4 mm), dull, chalky, gray or white foci.
On a mammogram, it may appear like a stellate mass, circumscribed mass, amorphous density, or architectual distortion. If there are central lucencies in the mass, or lipid cysts seen as round lucent areas surrounded by a thin fibrotic capsule, this suggests the correct diagnosis.
No treatment is necessary.
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Fat Necrosis
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Benign Breast Pathology
Inflammation vs. Inflammatory cancer Inflammation of the breast has redness,
swelling, pain and heat. Inflammatory cancer has edema,
hyperemia, tenderness and rapid enlargement of the breast. Microscopically, there is extensive invasion of dermal lymphatics by the carcinoma.
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Benign Breast Pathology
Radial Scarring A pathologic condition in which ductal
elements surrounded by bands of fibrous connective tissue radiate from a central sclerotic focus.
It is seen on a mammogram as a small stellate density.
No treatment is necessary.
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Radial Scarring
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Silicon Rupture
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References
ASRT Curriculum Guide Mentor Corporation http://radiographics.rsnajnls.org http://sprojects.mmi.mcgill.ca http://www-cdu.dc.med.unipi.it/itrejournal http://www.bocaradiology.com http://www.uhrad.com/mamarc