Comparing lymphadenectomy during radical nephroureterectomy: open versus laparoscopic

Area of Science:

• Urologic Oncology
• Surgical Oncology
• Minimally Invasive Surgery

Background:

• Laparoscopic nephroureterectomy (LNU) is a standard treatment for upper tract urothelial carcinoma.
• Concerns exist regarding the adequacy of lymphadenectomy in LNU compared to open nephroureterectomy (ONU).
• Maintaining oncologic principles, including thorough lymph node assessment, is crucial for effective cancer treatment.

Purpose of the Study:

• To compare the quality of lymphadenectomy performed during LNU versus ONU.
• To determine if oncologic principles are maintained with LNU.
• To assess the impact of surgical approach on lymph node yield and positivity.

Main Methods:

• Retrospective review of institutional databases for patients undergoing ONU (1990-2005) and LNU (2003-2007).
• Assessment of lymph node count, positive lymph node count, and positive lymph node density from medical records.
• Statistical comparison using the Wilcoxon rank sum test.

Main Results:

• 106 patients underwent ONU with lymphadenectomy; 28 underwent LNU with lymphadenectomy.
• LNU yielded a higher median number of lymph nodes removed (6 vs. 3, P=0.01).
• No significant difference was observed in the number of positive nodes (P=0.61) or lymph node density (P=0.42) between LNU and ONU.

Conclusions:

• Lymphadenectomy during LNU can achieve oncologic quality comparable to ONU.
• Dedicated effort in LNU ensures that lymphadenectomy is not a compromised aspect of the procedure.
• LNU is a viable oncologic option for upper tract urothelial carcinoma requiring lymph node assessment.