title: Fine needle aspiration cytology of malignant schwannoma metastatic to the breast.
abstract: A case of malignant schwannoma metastatic to the breast is reported. The tumor was found as a solitary breast lump in a 43-year-old woman and was clinically considered to be a primary tumor. Fine needle aspiration (FNA) smears of the mass were interpreted cytologically as a malignant neurogenic tumor, compatible with a malignant schwannoma. The patient did not have multiple neurofibromatoses. Eight months previously, an excision of a solitary nodule located in the left axilla had been performed in another hospital. Comparison of the histologic section from that excision with the FNA confirmed that the breast tumor was a metastatic malignant schwannoma, and the patient was treated accordingly.
authors.affiliation: Department of Clinical Cytology, Center for Adult Diseases, Osaka, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Matsuda
authors.forename: H
authors.initials: H
authors.lastname: Sone
authors.forename: S
authors.initials: S
authors.lastname: Ishiguro
authors.forename: T
authors.initials: T
authors.lastname: Kabuto
authors.forename: H
authors.initials: H
authors.lastname: Hayashi
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D005260:Female; D006801:Humans; D009442:Neurilemmoma / Q000175:diagnosis / Q000473:pathology*