title: Mammary myofibroblastoma: report of two cases with fine-needle aspiration cytology and review of the cytology literature.
abstract: Fine-needle aspirates from two histologically, immunohistochemically, and ultrastructurally confirmed mammary myofibroblastomas (MM) of two elderly women revealed abundant, randomly arranged single and clustered benign spindle-shaped mesenchymal cells with scant cytoplasm and elongated or oval nuclei displaying a finely granular chromatin pattern and inconspicuous nucleoli. In one case a few cells showed inconspicuous nuclear grooves. The aspirated tumor cells from the other case stained positively with desmin and CD34 antibodies and negatively with cytokeratin and S-100 protein antibodies, in keeping with an MM. A review of the literature was briefly presented.
authors.affiliation: Lac Laboratorio de Anatomia Patologica e Citopatologia, Campo Grande, Mato Grosso do Sul, Brazil.
authors.forename: Alexandre N
authors.initials: AN
authors.lastname: Odashiro
authors.forename: Luciana N
authors.initials: LN
authors.lastname: Odashiro Miiji
authors.forename: Danilo N
authors.initials: DN
authors.lastname: Odashiro
authors.forename: Gia-Khanh
authors.initials: GK
authors.lastname: Nguyen
mesh_terms: D000368:Aged; D018952:Antigens, CD34 / Q000032:analysis; D044963:Biopsy, Fine-Needle; D001943:Breast Neoplasms / Q000473:pathology*; D003581:Cytodiagnosis; D003893:Desmin / Q000032:analysis; D005260:Female; D006801:Humans; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000032:analysis; D009379:Neoplasms, Muscle Tissue / Q000473:pathology*; D009418:S100 Proteins / Q000032:analysis
chemical_list: D018952:Antigens, CD34; D003893:Desmin; D009363:Neoplasm Proteins; D009418:S100 Proteins