title: [Kidney carcinosarcoma].
abstract: A kidney tumour in a 36 year old female is described. The tumor was soft, of gray-brown color, size 12 x 11 cm. Histological, immunohistochemical and ultrastructural findings have demonstrated the signs of biphasic epithelial and mesenchymal cell differentiation. These data allowed the authors to define this tumor as a renal carcinosarcoma. Histogenesis of this tumor and differential diagnosis with other malignant renal tumors are discussed.
authors.forename: D G
authors.initials: DG
authors.lastname: Pasechnik
authors.forename: P E
authors.initials: PE
authors.lastname: Povilaĭtite
authors.forename: A E
authors.initials: AE
authors.lastname: Matsionis
authors.forename: L A
authors.initials: LA
authors.lastname: Medvedeva
mesh_terms: D000328:Adult; D002296:Carcinosarcoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000648:ultrastructure; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000648:ultrastructure; D014463:Ultrasonography