Usefulness of Ureteropyeloscopy for Diagnosis of Upper Urinary Tract Tumors

Abstract

Background: Upper urinary tract tumors have historically been diagnosed using urinary cytology examination and radiography. As the technique and instrumentation of ureteroscopic inspection and biopsy have advanced, ureteroscopic examination has become more routine. We studied the applicability and safety of using ureteropyeloscopy to diagnose upper urinary tract tumors. Patients and Methods: Between January 1994 and October 1999, 50 patients at Kobe University Hospital underwent ureteropyeloscopy for suspected upper urinary tract tumors. Results: The sensitivity values of radiography, urinary cytology, and ureteroscopy were 96%, 60%, and 92%, respectively. The specificity values of the three procedures examination were 12%, 84%, and 88%, respectively. No major complications or dissemination of malignant cells were evident. Conclusion: Ureteroscopic examination is a safe, sensitive, and specific means of detecting upper urinary tract tumors.