Renal pelvic cancer occurs mainly in the migratory cellular tissue of the renal pelvis, which metastasizes in the ureter and bladder. Its radical treatment should include all of the kidney, the full-length ureter, and part of the bladder at the opening of the affected ureter. The purpose of doing so is to reduce the local recurrence of the migratory cell malignant tissue in the bladder, which has an impact on the prognosis of the disease treatment. If kidney and ureter resection alone is done, the possibility of local recurrence of migratory cell carcinoma in the bladder opening is higher, so the expansion is very beneficial for the prognosis of the patient.