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Robot-assisted partial nephrectomy for ≥ 7 cm renal masses: a comparative outcome analysis.
Luis Felipe Brandao1, Homayoun Zargar1, Riccardo Autorino1
1Glickman Urological and Kidney Institute, Cleveland Clinic, OH.
Urology
|June 16, 2014
Summary
Robotic partial nephrectomy (RPN) is feasible for large renal masses (≥ 7 cm), with comparable major complication rates and renal function to smaller tumors (≤ 4 cm). However, larger tumors required longer operative times and had higher rates of blood loss and transfusion.
Area of Science:
- Urology
- Surgical Oncology
- Nephrology
Background:
- Robotic partial nephrectomy (RPN) is a standard treatment for renal masses.
- Outcomes for RPN in large renal masses (≥ 7 cm) are less understood compared to smaller masses (≤ 4 cm).
Purpose of the Study:
- To evaluate the feasibility and safety of RPN for large renal masses (≥ 7 cm).
- To compare surgical outcomes of RPN for large renal masses versus small renal masses (≤ 4 cm).
Main Methods:
- Retrospective review of an institutional RPN database.
- Analysis of surgical technique, renal function, oncologic, and pathologic data.
- Comparison of patients with tumors ≥ 7 cm (cases) versus tumors ≤ 4 cm (controls).
Main Results:
- Patients with large tumors (≥ 7 cm) experienced longer operative times, warm ischemia times, and estimated blood loss compared to controls.
- Higher rates of postoperative complications and blood transfusions were observed in the large tumor group.
- Major complication rates, positive surgical margins, and estimated glomerular filtration rate decline were similar between groups.
Conclusions:
- RPN is a feasible and safe nephron-sparing approach for carefully selected large renal masses (≥ 7 cm).
- Selection criteria include exophytic growth, polar location, and likelihood of benign histology.
