Perioperative and oncological outcomes of laparoscopic and open radical nephroureterectomy for locally advanced upper tract urothelial carcinoma: a single-center cohort study.

Introduction: Open radical nephroureterectomy (ONU) is the standard of care for treatment of upper tract urothelial carcinoma (UTUC), but laparoscopic radical nephroureterectomy (LNU) is increasingly being used due to better perioperative outcomes. However, its oncological safety remains controversial, in particular for advanced disease.We aimed to compare perioperative and oncological outcomes between surgical approaches in locally advanced UTUC (≥pT3 and/or pN+).

Material and methods: This study was a retrospective analysis of all 48 patients submitted to radical nephroureterectomy for advanced UTUC between 2006 and 2020 in our center.Perioperative data were compared between groups. Bladder tumor-free survival (BTFS), metastasis-free survival (MFS) and cancer-specific survival (CSS) were estimated using Kaplan-Meier curves and compared with log-rank p test. Multivariable Cox regression model was used to evaluate their association with surgical approach.

Results: Clinical and pathological characteristics were similar between groups. LNU had lower blood loss (p = 0.031), need for transfusion (p = 0.013) and length of hospital stay (p <0.001), with similar operative time (p = 0.860).LNU was associated with better MFS (hazard ratio [HR]: 0.43, 95% confidence interval [CI] 0.20-0.93, p = 0.033) and CSS (HR: 0.42, 95%CI 0.19-0.94, p = 0.036). Median time to cancer death was 41 months for LNU and 12 months for ONU (log-rank p = 0.029). BTFS was similar between groups (HR: 0.60, 95%CI 0.17-2.11, p = 0.427). On multivariable Cox regression model, surgical approach wasn't significantly associated with MFS (p = 0.202), CSS (p = 0.149) or BTFS (p = 0.586).

Conclusions: In our cohort of advanced UTUC, LNU did not result in inferior oncological control compared to ONU. The minimally invasive approach conferred an advantage in perioperative outcomes.