Introduction. The article describes a clinical case of non-invasive urothelial pelvic carcinoma a single-functioning right kidney.

Materials and methods. An 80-year-old patient with a single-functioning right kidney, chronic renal failure, underwent an early Bricker operation and nephrureterectomy of the left kidney, due to locally spread urothelial carcinoma of the bladder and pelvis of the left kidney. The tumor of the pelvis of the right kidney was detected by ultrasound examination of the kidneys, as well as confirmed by multispiral computed tomography with intravenous contrast. The patient underwent percutaneous electroresection of the pelvic tumor, followed by twice antegrade injection of mitomycin C (20 mg) into the upper urinary tract. Discharged on the 7th day after surgery, without drainage and without the progression of chronic renal failure. At the follow-up examination after 1 month, the patient has not complaints.

Discussion. Indications for minimally invasive treatment of urothelial carcinoma of the upper urinary tract are the presence of a small tumor mass in one kidney, small sizes bilateral tumor damage, chronic renal failure.

Conclusions. In patients with urothelial cancer of the upper urinary tract with chronic renal failure at the first stage of treatment, it is possible to perform organ-preserving minimally invasive surgical treatment (percutaneous electroresection, ureteroresectoscopy) with subsequent multimodal treatment (local chemotherapy, BCG therapy).

Conflict of interest. The authors declare no conflict of interest.