1986 Volume 77 Issue 11 Pages 1779-1783
Cytological analysis of 53 patients with upper urothelial tumor was reported. The patients consisted of 26 cases with renal pelvic tumor, 23 with ureter tumor and 4 with both tumors.
The total positive rate was 52.0% in upper urothelial tumors. But in voided urine cytology 16 out of 49 cases (32.7%) were positive. 9 out of 14 cases (64.3%) were positive in urine specimens obtained by ureteral catheterization. 4. out of 7 cases (57.1%) were positive in brushing cytology, and 6 out of 8 cases (75.0%) were positive in urine specimens obtained by percutaneous renal puncture.
In cytologically positive 11 cases with renal pelvic tumor, the positive rate was 81.8% in voided urine cytology but only 38.5% were positive in cytologically positive 16 cases with ureter tumor. On the other hand, 5 out of 6 cases with ureter tumor (83.3%) were positive in urine specimens obtained by renal puncture.
No correlation existed among the percentage of positive rates and the grade or the stage of tumors.
We consider that active cytological studies with improved techniques are effective for correct diagnosis of upper urothelial tumors.
