Retroperitoneoscopic partial nephrectomy using radiofrequency coagulation for small renal tumors.

Area of Science:

• Urology
• Minimally Invasive Surgery
• Oncology

Background:

• Laparoscopic partial nephrectomy (LPN) adoption is hindered by a lack of reliable hemostatic techniques.
• Effective hemostasis is crucial for minimizing complications and improving outcomes in LPN.

Purpose of the Study:

• To evaluate the efficacy of radiofrequency coagulation (RFC) for achieving hemostasis during LPN.
• To assess the safety and feasibility of RFC in the context of LPN for small renal masses.

Main Methods:

• LPN was performed using a retroperitoneal approach in 11 patients with small, exophytic renal tumors.
• Radiofrequency energy was applied to coagulate the tumor margin and surrounding parenchyma.
• Tumor excision was performed with ultrasonic shears, maintaining a 0.5-cm margin.

Main Results:

• Mean operative time was 222 minutes with an average blood loss of 51 mL.
• Minimal bleeding from the renal cut surface was observed, with clear visualization of renal structures post-coagulation.
• One patient experienced a thermal burn, and another developed hydronephrosis due to pyeloureteral junction stricture; no uncontrolled bleeding or urine leakage occurred.

Conclusions:

• Radiofrequency coagulation demonstrates excellent hemostatic capability during LPN.
• RFC enhances surgical visibility and ease of operation, obviating the need for hilar clamping.
• Further research and technological advancements are necessary for applying RFC to larger or centrally located renal tumors.