title: Cytopathology of renal collecting duct carcinoma in urine sediment.
abstract: Two cases of histologically, immunohistochemically, and ultrastructurally confirmed collecting duct carcinoma of the kidney (CDCK) with positive urine cytology are reported. The patients' urine sediments showed malignant glandular cells in sheets with defined, variable, granular cytoplasm and oval, hyperchromatic nuclei containing micro- or macronucleoli. The cytologic differential diagnosis of CDCK is briefly discussed.
authors.affiliation: Department of Laboratory Medicine and Pathology, University of Alberta Hospitals, Edmonton, Canada.
authors.forename: G K
authors.initials: GK
authors.lastname: Nguyen
authors.forename: G B
authors.initials: GB
authors.lastname: Schumann
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000175:diagnosis / Q000473:pathology / Q000652:urine; D000328:Adult; D002467:Cell Nucleus / Q000473:pathology; D003581:Cytodiagnosis; D003593:Cytoplasm / Q000473:pathology; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D007679:Kidney Medulla / Q000473:pathology; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000652:urine*; D007685:Kidney Tubules, Collecting; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D014556:Urine / Q000166:cytology*