Pyeloscopy in Urothelial Tumors

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Abstract
Intraoperative pyeloscopy was performed on 18 consecutive patients with indeterminate pelvic or caliceal filling defects, subsequently proved to be transitional cell carcinomas. After nephroureterectomy local tumor recurrence in the region of the renal fossa developed in 2 patients. Intraoperative pyeloscopy entails significant risks and the seeding to transitional cell carcinoma is possible.