In this study, we plan to explore the risk factors closely related to the occurrence of urinary leakage after partial nephrectomy for renal hilum tumors through retrospective analysis of multicenter clinical data, thereby providing clinical guidance value for the prevention of postoperative urinary leakage.

Inclusion Criteria:

• CT or MRI angiography indicates a renal hilum tumor, and the patient has undergone partial nephrectomy;
• The Eastern Cooperative Oncology Group (ECOG) performance status score is between 0 and 1, and the age is between 18 and 75 years old;
• The clinicopathological data are complete;
• There is no infection, autoimmune disease, hematological disease, or other malignancies.

Exclusion Criteria:

• The patient has surgical contraindications;
• There are congenital malformations of the urinary system, obstructive nephropathy, or other diseases that seriously affect the function of the urinary system before surgery;
• The patient has received relevant treatments that may affect the results of this study, such as radiotherapy in the kidney area, a history of kidney surgery, etc.;
• There are tumors in both kidneys.

Patients undergoing partial nephrectomy for renal hilum tumors