title: [Renal urothelial carcinoma mainly composed of signet-ring cells].
abstract: Autopsy study of an 80-year-old man has identified his renal tumor metastasizing to the heart, lung, and liver as urothelial car- cinoma; at the same time some cells in the main tumor and all cells in the metastases had a signet-ring phenotype, but neither mucicarcimine nor alcian blue stained the cell cytoplasm. The paper provides the histological and immunohistochemical pattern of the tumor and emphasizes its exclusive rarity. Attention is drawn to the possibility of signet-ring cell transformation in the cells of different tumors, including nonepithelial ones.
authors: Department of Pathomorphology and Clinical Expertise, I.I. Janelidze Saint Petersburg Research Institute of Emergency Care; Saint Petersburg Bureau of Forensic Medical Examination.
authors: S A
authors: SA
authors: Povzun
authors: Saint Petersburg Bureau of Forensic Medical Examination.
authors: E A
authors: EA
authors: Guseva
authors: Department of Morbid Anatomy, Saint Petersburg Clinical Research-and-Practical Center for Specialized Medical Care; Pathology Department, Medical Faculty, Saint Petersburg State University.
authors: A M
authors: AM
authors: Konstantinova
authors: Department of Morbid Anatomy, Saint Petersburg Clinical Research-and-Practical Center for Specialized Medical Care; Department of Tumor Morphology, N.N. Petrov Research Institute of Oncology, Russia.
authors: K V
authors: KV
authors: Shelekhova
mesh_terms: D000369:Aged, 80 and over; D002292:Carcinoma, Renal Cell / Q000473:pathology / Q000648:ultrastructure*; D018279:Carcinoma, Signet Ring Cell / Q000473:pathology / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D019459:Urothelium / Q000473:pathology / Q000648:ultrastructure*