title: Carcinosarcoma of the stomach with endocrine differentiation. A case report.
abstract: An unusual tumor was observed in a 67-year-old man. Microscopically, the tumor was composed of epithelial cells forming glands (CEA, EMA-positive) and spindle-shaped cells (vimentin-positive). A third component was a cell population ultrastructurally characterized by intracytoplasmic granules surrounded by a membrane; these proved to be chromogranin A-positive in the immunoperoxidase study.
authors.affiliation: Department of Medicine, University Hospital of Salamanca, Spain.
authors.forename: J J
authors.initials: JJ
authors.lastname: Cruz
authors.forename: J I
authors.initials: JI
authors.lastname: Paz
authors.forename: M
authors.initials: M
authors.lastname: Cordero
authors.forename: J
authors.initials: J
authors.lastname: Martín
authors.forename: M
authors.initials: M
authors.lastname: del Mar Abad
mesh_terms: D000368:Aged; D002296:Carcinosarcoma / Q000473:pathology*; D002454:Cell Differentiation; D006801:Humans; D008297:Male; D009490:Neurosecretory Systems / Q000473:pathology*; D013274:Stomach Neoplasms / Q000473:pathology*