title: Cytodifferentiation of urinary epithelial fragments: papillary transitional cell carcinoma in a renal allograft recipient.
abstract: Exfoliated epithelial fragments found in urinary sediment may originate in renal parenchymal or lower urinary tract epithelium. Cytologists must be aware of situations or diseases that frequently exfoliate epithelial fragments from these sites. In this case report, cytodiagnoses of both renal ischemic necrosis and low-grade papillary transitional cell carcinoma were made. Exfoliated renal epithelial fragments were accurately identified by their morphologic features and distinguished from exfoliated urothelial fragments of a low-grade bladder neoplasm.
mesh_terms: D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000652:urine; D006801:Humans; D007668:Kidney / Q000473:pathology; D007674:Kidney Diseases / Q000175:diagnosis; D016030:Kidney Transplantation; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D014184:Transplantation, Homologous; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis* / Q000652:urine; D014556:Urine / Q000166:cytology*