Combined Postoperative Radiotherapy With Kidney Sparing Surgery for Locally Advanced High-risk Ureteral Cancer

1) Distant metastasis or retroperitoneal lymph node metastasis (N+) had been detected at the time of surgery; R2 resection patients; history of bladder cancer; 2) History of pelvic and abdominal radiotherapy; history of inflammatory bowel disease; history of systemic chemotherapy; 3) Pregnant women or breastfeeding women; or women of childbearing potential who are not practicing reliable contraception; (4) The presence of active infections in those with pre-existing or coexisting bleeding disorders 5) clinically significant cardiac disease (e.g., hypertension controlled with medications, unstable angina, New York Heart Association (NYHA) class ≥II congestive heart failure, unstable symptomatic arrhythmias, or class ≥II peripheral vascular disease); 6) Psychological, family, and social factors leading to lack of informed consent.