Kaplan–Meier curves depicting OS and DSS of patients with renal pelvis or ureteral NMIUTUC according to the type of surgical treatment modality. (A) OS of patients with renal pelvis NMIUTUC; (B) DSS of patients with renal pelvis NMIUTUC; (C) OS of patients with ureteral NMIUTUC; (D) DSS of patients with ureteral NMIUTUC.
Abbreviations: OS, overall survival; DSS, disease-specific survival; NMIUTUC, non-muscle invasive upper tract urothelial carcinomas.