This study aimed to assess early outcomes of the single-port (SP) robotic Low Anterior Access (LAA) for all upper urinary tract surgeries. Additionally, it aimed to explore the impact of clinical factors, notably Body Mass Index (BMI), on post-operative outcomes and length of hospital stay. Overall, 76 consecutive patients underwent SP robotic surgery with LAA involving all upper urinary tract pathologies, with data collected prospectively. Baseline characteristics, intra- and post-operative outcomes, pain levels, and opioid use were analyzed. Statistical methods, including logistic regression and locally weighted scatterplot smoothing (LOWESS) analysis, were used to assess same-day discharge (SDD) predictors and the association between BMI and same-day discharge probability. According to the Institutional Review Board (IRB) protocol, only data recorded in our electronic medical record system were included. Ten different procedures were performed with LAA, with no need for conversion to open surgery and complication rates in line with the literature (30-days: 5%, 90-days: 6.6%). Notably, 77.6% of patients were discharged on the same day. A significant association was found between BMI and prolonged hospital stay, particularly in obese patients (BMI ≥ 30 kg/m2). Post-operative pain was generally low (median VAS: 4), with over 70% discharged without opioid prescriptions. The novel LAA is a versatile approach for various upper urinary tract surgeries, even in obese patients. While achieving satisfactory post-operative outcomes, increased BMI correlated with a reduced likelihood of same-day discharge. Further studies, including larger cohorts and multicenter collaborations, are warranted to explore anesthesiologic management and validate these findings.

The role of pelvic lymph node dissection (PLND) for prostate cancer is still controversial. This study aims to compare the outcomes of PLND between extraperitoneal single-port (SP eRARP) and transperitoneal multiport (MP tRARP) robotic-assisted radical prostatectomy. This was a retrospective analysis from our single-center database for patients who underwent SP eRARP or MP tRARP with PLND between 2015 and 2023. The primary endpoint was to analyze and compare specific data related to PLND between the two populations by the detection of pN+ patients, the total number of lymph nodes removed, and the number of positive lymph nodes removed. The secondary endpoints included comparing major complications, lymphoceles, and biochemical recurrence between the two cohorts of the study. A total of 293 patients were included, with 85 (29%) undergoing SP eRARP and 208 (71%) undergoing MP tRARP. SP eRARP showed significant differences in PLND extension from MP tRARP, while MP tRARP yielded more lymph nodes (p < 0.001). There were no differences in pN+ patient detection (p = 0.7) or the number of positive lymph nodes retrieved (p = 0.6). The rates of major complications (p = 0.6), lymphoceles (p = 0.2), and biochemical recurrence (p = 0.9) were similar between the two groups. Additionally, SP eRARP had shorter operative time (p = 0.045), hospital stay (p < 0.001), and less postoperative pain at discharge (p = 0.03). Limitations include a retrospective, single-center analysis. Despite the SP approach in RARP resulting in fewer retrieved lymph nodes, outcomes were comparable with the MP approach regarding the detection of patients with positive lymph nodes and the number of positive nodes. Additionally, the SP approach led to lower pain levels and shorter hospital stays. With this study, we demonstrate that pelvic lymph node dissection performed via the extraperitoneal approach during robotic-assisted radical prostatectomy with a single-port system provides comparable outcomes with the standard transperitoneal multiport approach in detecting patients with positive lymph nodes and retrieving positive nodes. In addition, it offers significantly reduced pain levels and shorter hospital stays.