Breast Flashcards
benign mimics of tubular carcinoma
sclerosing lesions (radial scar, sclerosing adenosis, sclerosed papilloma)
microglandular adenosis
syringomatous adenoma
benign mimics of malignancy (5)
FNA/biopsy artefact
stromal giant cells (normal in fibroadenoma and benign phyllodes)
collagenous spherulosis
radiation/chemo
nevus cells in lymph node
Pagets vs toker cells
toker cells (bland, Her2-)
malignant mimics of benign
lobular ca (vs inflammation)
tubular ca (vs sclerosing lesions, MGA and syringomatous adenoma)
spindle cell carcinoma (vs benign/low grade spindled lesions)
granulomas
granulomatous mastitis
infection
foreign body (silicon/surgery)
fat necrosis
sarcoid
UDH vs ADH/DCIS
UDH mosaic CK5/6 and ER
ADH/DCIS CK5/6-, ER+
Pagets vs melanoma vs scc in situ
paget LMWCK+
melanoma melanA+
SCC HMWCK+
Sebaceous ca BerEP4+
cribriform lesions
collagenous spherulosis
cribriform DCIS
cribriform ca
adenoid cystic carcinoma
common low grade spindled lesions
metaplastic ca
phyllodes
rare low grade spindled lesions
spindle cell neuroendocrine ca
cellular PASH
myofibroblastoma
myoepithelioma
nodular fasciitis
fibromatosis
schwannoma
leiomyoma
high grade spindled lesions
spindle cell ca (subtype of metaplastic ca)
malignant phyllodes
angiosarcoma
other radiation induced sarcoma
primary breast sarcoma
biphasic lesions
fibroadenoma
phyllodes
metaplastic ca
pleomorphic adenoma
adenomyoepithelioma
papillary lesions
papilloma
papilloma with DCIS
papillary DCIS
encapsulated papillary ca
solid papillary ca
vascular lesions
PASH
perilobular hemangioma
hemangioma
atypical vascular lesion
angiosarcoma
atypical vascular lesion (criteria)
<2cm, confined to dermis, well circumscribed, no HG nuclear atypia, no mitoses, no endothelial layering
nb: post radiation angiosarcoma c-myc+ (avl is c-myc-)
