title: Aspiration biopsy cytology of mammary myoepithelioma.
abstract: A case of ultrastructurally confirmed myoepithelioma of the breast studied by fine-needle aspiration biopsy is reported. Aspirated tumor cells were spindle-shaped with well-defined cytoplasm and oval nuclei showing no remarkable nuclear pleomorphism. They were seen mainly in irregular bundles with strong cellular cohesiveness. Their cytoplasm contained S-100 protein demonstrated by the peroxidase antiperoxidase staining technique.
authors.affiliation: Department of Pathology, University of Alberta Faculty of Medicine, Canada.
authors.forename: G K
authors.initials: GK
authors.lastname: Nguyen
authors.forename: T K
authors.initials: TK
authors.lastname: Shnitka
authors.forename: L D
authors.initials: LD
authors.lastname: Jewell
mesh_terms: D000368:Aged; D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000378:metabolism / Q000473:pathology*; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D009208:Myoepithelioma / Q000378:metabolism / Q000473:pathology*; D009418:S100 Proteins / Q000378:metabolism
chemical_list: D009418:S100 Proteins