title: Small cell neuroendocrine (oat cell) carcinoma of the male breast. Immunocytochemical and ultrastructural investigations.
abstract: A case of small cell neuroendocrine (oat cell) carcinoma of the breast in a 52-year old male is presented. Oat cell carcinomas have been reported in various extrapulmonary sites, but this is the second case of a primary oat cell carcinoma of the breast and the first one to have been documented in a male. The tumor was investigated histologically, immunocytochemically and ultrastructurally. The relationship to so-called "carcinoid" mammary tumors is discussed.
mesh_terms: D001940:Breast / Q000648:ultrastructure; D001943:Breast Neoplasms / Q000648:ultrastructure*; D002116:Calcitonin / Q000378:metabolism; D002272:Carcinoembryonic Antigen / Q000032:analysis; D018288:Carcinoma, Small Cell / Q000648:ultrastructure*; D003593:Cytoplasm / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008875:Middle Aged; D010751:Phosphopyruvate Hydratase / Q000378:metabolism
chemical_list: D002272:Carcinoembryonic Antigen; D002116:Calcitonin; D010751:Phosphopyruvate Hydratase