title: Improved technique for retrograde brushing in diagnosis of urothelial tumors of upper urinary tract.
mesh_terms: D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000473:pathology; D002404:Catheterization / Q000295:instrumentation*; D003581:Cytodiagnosis / Q000295:instrumentation; D004848:Epithelium / Q000473:pathology; D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000473:pathology; D007682:Kidney Pelvis