Organ-sparing treatment for upper urinary tract tumors in the single functioning kidney in the presence of anatomic anomaly

The main treatment of urothelial carcinoma of the upper urinary tract is organ-sparing surgery. The unavoidability of the latter may be in doubt in unclassified cases (an extensive tumor involvement area of the calycopelvic system in the single functioning kidney and failure to make an adequate optic revision of the zone of interest). Each of these patients requires a special approach at the stage of diagnosis and choice of treatment policy. The paper describes a case of successful organ-sparing treatment for upper urinary tract cancer in the presence of completely doubled right kidney.