Renal anatomical classification systems cannot predict the occurrence of vascular complications after partial...

Area of Science:

• Urology
• Nephrology
• Surgical Oncology

Background:

• Partial nephrectomy is a standard treatment for renal tumors.
• Assessing renal tumor complexity is crucial for surgical planning and predicting outcomes.
• Vascular complications are a significant concern following partial nephrectomy.

Purpose of the Study:

• To evaluate the relationship between renal tumor complexity, as assessed by PADUA, RENAL, and ZS scores, and the occurrence of vascular complications after partial nephrectomy.
• To identify predictors of vascular complications in patients undergoing partial nephrectomy.

Main Methods:

• A retrospective study of 1917 patients who underwent partial nephrectomy between January 2007 and December 2018.
• Cross-sectional imaging was used to assess tumor complexity.
• Logistic regression analysis was employed to determine independent predictors of vascular complications.

Main Results:

• A total of 31 (1.6%) patients experienced vascular complications.
• High tumor complexity, based on PADUA and ZS scores, was associated with a decreased risk of vascular complications (OR=0.256, P=0.014 for PADUA; OR=0.279, P=0.040 for ZS).
• Laparoscopic and robot-assisted laparoscopic partial nephrectomy were identified as independent risk factors for vascular complications, particularly in the earlier years of the study. In recent years, high tumor complexity (PADUA score) was associated with a decreased risk (OR=0.110, P=0.044).

Conclusions:

• Current renal anatomic classification systems (PADUA, RENAL, ZS) may not reliably predict vascular complications after partial nephrectomy.
• Surgical technique and potentially improvements in surgical management over time influence the incidence of vascular complications.
• Further research may be needed to refine predictive models for vascular complications in partial nephrectomy.