breast Flashcards
painful breast is suggestive of ___ lesion
benign/malignant
benign
would you suspect cancer of the breast when the nipple discharge is spontaneous and unilateral?
yes
most common bacteriologic cause of acute mastitis
S. aureus
[diagnosis]
mimic cancer, history of breast trauma
Histo: hemorrhagic, liquefactive fat necrosis with neutrophils and macrophages
fat necrosis
[benign or malignant?]
Benign ductal cells
Myoepithelial cells present
benign
[diagnosis]
malignant ductal cells
present myoepithelial cells
DCIS
[diagnosis]
malignant ductal cells
absent myoepithelial cells
negative p63
invasive CA
[diagnosis: proliferative disease without atypia]
> 2 layers of cells in aduct
distorted lumina at periphery
mimics DCIS
Epithelial hyperplasia
[diagnosis: proliferative disease without atypia]
solid cords or double strands of cells in a densely fibrotic stroma
closely mimics carcinoma; inner ducts are compressed
sclerosing adenosis
[diagnosis: proliferative disease without atypia]
papillary fronds with fibrovascular cores growing in a dilated duct
present myoepithelial layer
papilloma
[diagnosis: proliferative disease without atypia]
combination of epithelial hyperplasia, sclerosing adenosis and papilloma
central nidus of entrapped glands in a hyalinized stroma
mimics cancer
complex sclerosing lesion
[diagnosis: proliferative disease with atypia]
DCIS without full duct involvement cribiform pattern (cookie cutter appearance)
atypical ductal hyperplasia
[diagnosis: proliferative disease with atypia]
LCIS but less than 50% involvement of acini in a lobule; loss of E-cadherin
Atypical lobular hyperplasia
most common non-skin malignancy in women
breast CA
2nd to lung CA in causing deaths in women
breast CA
BRCA 1 is located in what chroomosome?
Ch 17
BRCA 2 is located in what chroomosome?
Ch 13
the duct system of that breast that is hormonally responsive
terminal duct-lobular unit
site in the breast where invasive breast CA arise
terminal duct-lobular unit
[diagnosis: cancer or not CA?]
small, irregular, numerous, clustered calcification
CA