Urine analysis: Atypical transitional epithelial cells, highly suspicious of carcinoma.

Ureteroscopic biopsy: Inconclusive due to crushing artifacts.

Procedure: Laparoscopic right nephrouretrectomy.

Diagnosis: Low grade papillary transitional cell carcinoma of the right ureter. Tumor maximum size 3.0 cm (gross). All ureteric excision margins free of tumor. Tumor does not invade submucosa or muscle coats. Negative for lymphovascular space invasion. Kidney shows severe interstitial chronic nephritis. Hydroureteronephrosis grossly confirmed. Renal vessels show severe intimal fibrosis and luminal narrowing. Renal vascular resection margin free of tumor. Pathological staging pTa,pNx, pMx.