title: Pleomorphic adenoma of the breast: report of a case.
abstract: We present herein the case of a 74-year-old woman found to have a pleomorphic adenoma, or so-called mixed tumor, of the breast. The patient presented with a hard mass, 3 cm in diameter, located just beneath the left areola. Physical examination suggested a diagnosis of breast carcinoma; however, the findings of both ultrasonography and mammography indicated a benign neoplasm. Aspiration biopsy cytology was evaluated as class III and the diagnosis of pleomorphic adenoma was finally confirmed by examination of an excisional biopsy specimen. As it is a rare benign tumor, pleomorphic adenoma of the breast has been mistaken for a malignant tumor clinically, mammographically, cytologically, and even by frozen section. Thus, an awareness of this disease in the breast will help to prevent misdiagnosis and overaggressive surgery.
authors.affiliation: Department of Surgery, Imari Municipal Hospital, Saga, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Mochinaga
authors.forename: T
authors.initials: T
authors.lastname: Yatsugi
authors.forename: S
authors.initials: S
authors.lastname: Tomokawa
authors.forename: T
authors.initials: T
authors.lastname: Ishida
authors.forename: H
authors.initials: H
authors.lastname: Ohtani
authors.forename: Y
authors.initials: Y
authors.lastname: Higami
mesh_terms: D008949:Adenoma, Pleomorphic / Q000175:diagnosis* / Q000473:pathology; D000368:Aged; D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D008327:Mammography; D016217:Ultrasonography, Mammary