Female Flashcards
(198 cards)
what is the acinus?
what the functional unit of the breast, the terminal duct lobular unit, is called during lactation
explain the normal epithelium of the lobules and ducts of the breast (location, shape, and function)
2 layers: inner cuboidal - milk production
outer myoepithelial - contractile function to move milk down duct
what is an important change in the epithelium of the breast that indicates malignancy?
loss of myoepithelial cells in the ducts
define polythelia
accessory nipples - can be anywhere along milk line from axilla to vulva
define polymastia - significance?
accessory breast tissue anywhere along milk line - can have any breast pathology
what is induration of the breast?
hardening
Mother is breast feeding her child and notices a painful lump in her right breast. Diagnosis? Pathogenesis?
Galactocele
cystic dilation of obstructed duct during lactation
32 year old woman presents with a lump in her breast that shows vague nodularity, is bilateral, and gets bigger before mensus. There is no skin change or axillary LN involvement. Diagnosis? Pathogenesis? Relationship to oral contraception?
Fibrocystic change (FCC)
exaggerated response to normal hormones of menstrual cycle
oral contraction REDUCES risk of FCC
42 year old woman presents with cysts of her breast and you see related calcifications on X-ray. On biopsy you find them filled with a bloody, watery substance. Explain her condition. Should you be concerned?
These are blue domed cysts of FCC and are completely benign
35 year old woman presents with lumps that are lined by large polygonal cells with abundant granular, eosinophilic cytoplasm with small, round, deeply chromatic nuclei. You also see lymphomononuclear infiltration. Disease? Name of this histology?
FCC
apocrine metaplasia
How do you tell the difference between simple FCC and proliferative FCC?
Proliferative FCC will have epithelial hyperplasia of ducts and ductules
Proliferative FCC also has nipple discharge
Both hyperplasia and nipple discharge are absent in simple
40 year old woman presents with lump in her breast and nipple discharge. On biopsy you see the lumen of a duct is filled with heterogenous cells of different morphologies. You also see fenestrations around the edges of the duct lumen. What is this condition, specifically. What is the prognosis?
Cribiform pattern of proliferative FCC
ductal hyperplasia carries at 2x increased risk of invasive carcinoma
40 year old woman presents with lump in her breast and nipple discharge. On biopsy you see the lumen a duct is less than 50% filled with monomorphic, hyperplastic cells. What is this condition specifically. What is the prognosis?
Atypical hyperplasia subtype and proliferative FCC
5x increased risk of invasive carcinoma
35 year old woman presents with a hard, rubbery, irregular lump with ill defined borders in the upper outer quadrant of her right breast. On x-ray you see calcifications and on biopsy you find a dense, fibrous stroma with masses of proliferated ducts in a back to back arrangement. Diagnosis? What is an important test to do on this biopsy sample?Prognosis?
Sclerosing adenosis subtype of proliferative FCC
Must stain for myoepithelial cells, if present, not carcinoma!
Sclerosing adenosis only has a 2x increased risk for invasive carcinoma (very small!) so good prognosis, benign condition
27 year old woman nursing her baby suddenly experiences enlargement and pain in her left breast. The entire breast became reddish and the nipple cracked. Diagnosis? Explain how this condition resolves.
Acute mastitis with Strep infection
Strep causes infection of the whole breast and heals WITHOUT scaring
27 year old woman nursing her baby suddenly experiences enlargement and pain in her left breast. You notice a reddish area under her left nipple. Diagnosis? Explain how this condition resolves.
Acute mastitis with Staph infection
Staph infection remains localized, usually under nipple but can heal with indurated scar
65 woman presents with an indurated mass close to her areola, nipple retraction, and green-brown nipple discharge. On histo you see plasma cells, foamy histiocytes, and granulomas. Diagnosis? Pathogenesis? Prognosis?
Duct Ectasia (dilation) obstruction of large duct leading to dilation and rupture benign, but mimics carcinoma (mass in postmenopausal woman usually cancer)
Patient with macromastia presents with a painful mass and shows calcifications on mammography. On histo you see neutrophils, fibrosis, giant cells and cholesterol clefts. Diagnosis? Pathogenesis? Prognosis?
Fat necrosis
Usually traumatic
benign condition - mimics carcinoma but presents with painFUL lump
18 year old presents with a 2cm lump in her right breast that is well delineated and mobile and difficult to palpate. Skin is normal, no LN involvement, no signs of inflammation. Diagnosis? Pathogenesis? Prognosis?
Fibroadenoma - most common benign tumor of breast
Grows with excess estrogen
Benign, no risk of malignancy
24 year old presents with a 4cm lump in her left breast and large, popcorn calcifications on mammography. On biopsy you see loose edematous myxoid fibroblastic stroma containing glandular/duct-like epithelial lined spaces. Diagnosis? Type of tumor? Prognosis?
Fibroadenoma
tumor of stroma cells
Benign, no malignant potential
Name 2 benign stromal tumors of the breast. How can they be differentiated?
Fibroadenoma: teens and 20s
Phylloides tumor: 40s-50s (much less common)
45 year old woman presents with firm, palpable, 12 cm mass that is growing quickly. On histo you see mild atypia of stromal cells and hypercellular projections with slits and clefts. Diagnosis? Prognosis? Should you be concerned about the axillary lymph nodes? why or why not
Phylloides tumor (stromal tumor) usually benign (15% malignant) invasion is usually only local, but if it does metastasize, it does so via blood, so no need to remove axillary LNs
45 year old woman presents with firm, palpable, 12 cm mass that is growing quickly. On histo you see hypercellularity, atypical stromal cells, stromal overgrowth, mitosis, and infiltrative borders. Diagnosis? Prognosis?
Phylloides tumor (malignant - usually only 15%)
Malignant, usually only invades locally, can spread via BLOOD
“leaf like projections”
Phylloides tumor