Retroperitoneal laparoscopic partial nephrectomy for moderately complex renal hilar tumors

Area of Science:

• Urology
• Minimally Invasive Surgery
• Oncology

Background:

• Renal hilar tumors present surgical challenges.
• Partial nephrectomy is preferred for preserving renal function.
• Retroperitoneal laparoscopic partial nephrectomy (LPN) offers a minimally invasive alternative.

Purpose of the Study:

• To evaluate the initial experience with retroperitoneal LPN for moderately complex renal hilar tumors.
• To assess the feasibility and safety of the retroperitoneal laparoscopic approach for these specific tumors.

Main Methods:

• Retrospective analysis of 14 patients undergoing retroperitoneal LPN for renal hilar tumors.
• Tumors evaluated using the R.E.N.A.L. nephrometry scoring system.
• A three-port retroperitoneal approach with dorsal incision was utilized.

Main Results:

• All 14 procedures were completed successfully without conversion to open surgery.
• Low complication rate (2 cases of perirenal fluid collection) managed conservatively.
• Favorable perioperative outcomes including mean operative time (134.3 min), blood loss (133.2 ml), warm ischemia time (30.6 min), and hospital stay (4.7 days).
• No recurrence or metastasis observed at a mean follow-up of 18.6 months.

Conclusions:

• Retroperitoneal LPN is a feasible, safe, and effective treatment for moderately complex renal hilar tumors.
• The approach is technically demanding but can be recommended for complex cases in experienced surgical hands.