(Under Construction)
Non-Neoplastic or Low-risk
– Microcalcifications associated with __________
– Fibrocystic change
– Sclerosing adenosis
– Biopsy site changes
– Duct ectasia
– Usual Ductal Hyperplasia (UDH)
– Pseudoangiomatous Stromal Hyperplasia (PASH)
– Granulomatous inflammation (see comment)
– Findings suggestive of Diabetic mastopathy (see comment)
– Columnar cell change
– Radial scar
– Lactational adenoma
– Microglandular adenosis
– Apocrine adenosis
– Gynecomastia
– Collagenous spherulosis
Neoplastic, In situ (Higher risk)
– Atypical Lobular Hyperplasia (ALH)
– Flat Epithelial Atypia (FEA)
– Lobular carcinoma in situ (LCIS)
– Pleomorphic lobular carcinoma in situ
– Atypical Ductal Hyperplasia (ADH)
– Ductal Carcinoma in situ (DCIS), Low-grade
– Ductal Carcinoma in situ (DCIS), High-grade
– Solid Papillary Carcinoma in situ
– Paget’s disease of the Nipple
Neoplastic, Invasive
– Invasive Breast Carcinoma, No Special Type
– Invasive Lobular Carcinoma
– Micro-invasive carcinoma
– Invasive Breast Carcinoma, with _________ features
– Tubular carcinoma
– Invasive cribriform carcinoma
– Mucinous carcinoma
– Invasive micropapillary carcinoma
– Apocrine adenocarcinoma
– Metaplastic carcinoma
– Encapsulated papillary carcinoma with invasion
– Solid papillary carcinoma with invasion
– Intraductal papillary adenocarcinoma with invasion
– Adenoid cystic carcinoma
Neoplastic, fibroepithelial or mesenchymal
– Fibroadenoma
– Fibroadenomatous changes
– Juvenile Fibroadenoma
– Hamartoma
– Myofibroblastoma
– Desmoid fibromatosis
– Phyllodes tumor
– Fibroepithelial lesion (see comment)
COMMENT: The biopsy shows a fibroepithelial lesion with intracanalicular growth and moderate stromal cellularity. Overall, it is favored that this represents a fibroadenoma. However, the differential diagnosis does include a Phyllodes tumor. Notably, there is no significant stromal atypia, stromal overgrowth, or mitotic activity. Clinical and radiographic correlation is recommended.
Last updated: 12/12/25