The small cell lesion of mammary ducts and lobules.
D000232:Adenofibroma / Q000473:pathology; D000328:Adult; D000368:Aged; D001706:Biopsy; D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery; D002278:Carcinoma in Situ / Q000473:pathology* / Q000601:surgery; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D008408:Mastectomy; D008875:Middle Aged; D008938:Mitosis; D009092:Mucous Membrane / Q000473:pathology; D011230:Precancerous Conditions / Q000453:epidemiology / Q000473:pathology* / Q000601:surgery; D011379:Prognosis