title: Histiocytoid breast carcinoma: a case report of an uncommon histologic variant of lobular carcinoma.
abstract: A rare case of invasive histiocytoid breast carcinoma is presented. A middle aged female patient underwent quadrantectomy for a palpable mass in her right breast. The neoplastic cells showed pronounced histiocytoid appearance and immunopositivity for cytokeratins 7 and CAM 5,2, EMA, CEA, GCDFP-15, MFG and ER/PR. We report here this uncommon histologic pattern because of the considerable diagnostic interest. Recognition of this histologic variant either in primary or metastatic locations may present some difficulties to the pathologist. Differential diagnostic problems are emphasized and the literature is reviewed.
authors.affiliation: Département de Pathologie, Faculté de Médecine, Université Aristote de Thessalonique, 54006 Thessalonique, Grèce.
authors.forename: I
authors.initials: I
authors.lastname: Kostopoulos
authors.forename: S
authors.initials: S
authors.lastname: Barbanis
authors.forename: E
authors.initials: E
authors.lastname: Mylona
authors.forename: S
authors.initials: S
authors.lastname: Papadopoulos
authors.forename: C
authors.initials: C
authors.lastname: Papadimitriou
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology*; D018275:Carcinoma, Lobular / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged