title: Mucinous subtype of invasive ductal carcinoma arising within a fibroadenoma.
abstract: Fibroadenoma is a common benign tumor observed during the second and third decades of life. Malignancy transformation in the epithelial component of a fibroadenoma is rare and can occur 20 years after its diagnosis. Mammographic findings in this phenomenon include indistinct margins and microcalcifications. Here we present a 58-year-old woman with a mobile, lateral upper quadrant mass that was rather firm when palpated. The mammography showed a lobulated mass without calcification suggestive of a benign process, most probably fibroadenoma. However the excisional biopsy contained both an intracanalicular fibroadenoma and invasive ductal carcinoma with mucinous components.
authors.affiliation: Pathology Department, Afzalipour Medical School, Kerman, Iran.
authors.forename: Nahid
authors.initials: N
authors.lastname: Monsefi
authors.forename: Hossein
authors.initials: H
authors.lastname: Nikpour
authors.forename: Moienadin
authors.initials: M
authors.lastname: Safavi
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Lashkarizadeh
authors.forename: Shahriar
authors.initials: S
authors.lastname: Dabiri
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000000981:diagnostic imaging / Q000473:pathology*; D005260:Female; D018226:Fibroadenoma / Q000473:pathology*; D006801:Humans; D008327:Mammography; D008875:Middle Aged