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Renal arterial pseudoaneurysm after robotic-assisted partial nephrectomy: a single-center analysis
Yu-Pin Huang1, Hsiao-Jen Chung2,3, I-Shen Huang4,5
1Department of Urology, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei City, Taiwan.
World Journal of Urology
|September 2, 2025
Summary
Robotic-assisted partial nephrectomy can lead to renal artery pseudoaneurysms (RAP). Higher RENAL nephrometry scores and longer operative times predict RAP occurrence after this procedure.
Area of Science:
- Urology
- Surgical Oncology
- Interventional Radiology
Background:
- Robotic-assisted partial nephrectomy (RaPN) is increasingly used for kidney tumor treatment.
- Renal artery pseudoaneurysm (RAP) is a rare but serious complication following nephrectomy.
- Understanding the incidence and predictors of RAP is crucial for patient safety and surgical planning.
Purpose of the Study:
- To determine the incidence of renal artery pseudoaneurysm (RAP) after robotic-assisted partial nephrectomy (RaPN).
- To identify predictive factors associated with RAP development.
- To evaluate the effectiveness of endovascular management for RAP.
Main Methods:
- Retrospective review of an institutional RaPN database (December 2009 - June 2021).
- Diagnosis of RAP using computed tomography angiography.
- Comparison of patients with RAP managed by embolization versus those without RAP or managed conservatively.
Main Results:
- 14 out of 544 patients (2.6%) developed RAP post-RaPN; 12 underwent embolization.
- Patients requiring embolization had higher RENAL nephrometry scores and longer operative times.
- No recurrent RAP was observed during follow-up.
Conclusions:
- Higher RENAL nephrometry scores and longer operative times are significant predictors of RAP after RaPN.
- Endovascular management, primarily embolization, appears effective in treating RAP.
- Continued vigilance and risk factor assessment are important in RaPN procedures.
