Oncologic, Perioperative Outcomes of Female Radical Cystectomy: Results from a Multicenter Study in Korea

Perioperative, oncological, and survival outcomes of robotic radical cystectomy with urinary diversion in females: A single-center retrospective observational study

Introduction

Robot-assisted radical cystectomy (RARC) is a standrad approach for surgical management of bladder cancer. Currently, most literature on RARC is in men, possibly due to the higher incidence of bladder cancer in males. We reviewed the perioperative, oncological and survival outcomes in 41 women who underwent RARC by a single surgeon at a tertiary health-care center.

Methods

Out of 225 RARC and urinary diversion procedures performed from 2012 to 2020, a retrospective analysis of 41 women was performed. Baseline demographic and perioperative details, oncological data, and survival were recorded and analyzed. Kaplan-Meir analysis was done for survival outcomes and prognostic factors were assessed by log rank test.

Results

Thirty-eight patients underwent intracorporeal urinary diversion, while three underwent extracorporeal diversion. One patient underwent organ preserving cystectomy. Clavien-Dindo 30-day postoperative complications were Grade I in 8 (19.5%), Grade II in 4 (9.8%), and Grade IIIa in 3 (7.3%) patients with no mortality. During the median follow-up of 34 months (range: 6-87 months), 7 patients died of disease recurrence. Five-year survival was 74% (95% confidence interval [CI]: 59-82) and 35% (95% CI: 10-91) in transitional cell carcinoma (TCC) and non-TCC group, respectively, with P = 0.04. There was no mortality in Stages 0 and 1 disease. Five-year survival was 78% in Stage 2 and 41% in Stage 3 and 4.

Conclusion

Our study demonstrates acceptable clinical, perioperative, and oncological outcomes of robotic radical cystectomy in females, thus highlighting its safety and feasibility.

The learning curve for robot-assisted radical cystectomy with total intracorporeal urinary diversion based on radical cystectomy pentafecta

Objective

To analyze the learning curve for robot- assisted radical cystectomy (RARC) with total intracorporeal urinary diversion (ICUD) in terms of both time efficiency and quality of surgery based on radical cystectomy (RC)-pentafecta.

Patients and methods

We identified 203 consecutive patients who underwent RARC with ICUD of the ileal conduit (IC, 85) and orthotopic neobladder (ONB, 118) performed by a single surgeon between 2011 and 2021. We grouped ten consecutive patients into time-associated blocks according to the operation order. Process efficiency and operation quality were measured based on the surgeon’s console time and attainment/score sum of RC-pentafecta. The overcoming point of the learning curve was defined graphically and statistically.

Results

The mean follow-up period was 44.5 ± 30.7 months. Of the 203 patients, 109 (53.7%) attained the five criteria of RC-pentafecta (ONB vs IC, 50.6% vs. 55.9%, p = 0.35). The attainment rate and sum of the RC-pentafecta score of the third group were not significantly different from those of all patients (40.0% vs. 53.7%, p = 0.369, 4.00 ± 1.05 vs. 4.41 ± 0.75, p = 0.137, respectively), and the proficiency in operation quality was satisfactory in the third group. The console times continually improved and stabilized after the 140^th case (IC, 60; ONB, 80), and the attainment rate and sum of the RC-pentafecta were significantly different between before and after the 140^th case (p<0.001).

Conclusion

A single surgeon’s learning curve for RARC with ICUD and pelvic lymph node dissection (PLND) showed an acceptable level of proficiency after 30 consecutive cases in terms of the operation quality. However, for an expert surgeon, 140 cases were required to reach a plateau in time efficiency and second leap with the RC-pentafecta. RARC with ICUD and PLND can be performed safely without compromising functional outcomes and complications through sharing and transmission of standardized techniques.

Safety and Efficacy of Reproductive Organ-Sparing Radical Cystectomy in Women With Variant Histology and Advanced Stage

PURPOSE

Muscle invasive bladder cancer surgical management has been historically a radical cystoprostatectomy in males and an anterior exenteration in females. Uterine, ovarian, and vaginal preservation are utilized, but raise concerns regarding risk to oncologic control, especially in variant histopathology or advanced stage.

MATERIALS AND METHODS

A retrospective single institutional analysis identified radical cystectomies performed in women, including those with variant histology, which were defined as reproductive organ sparing (uterine, vaginal, and ovary sparing) or nonorgan sparing. The Kaplan-Meier method was used for recurrence-free survival (RFS), cancer-specific survival (CSS), and overall survival (OS) in patients with advanced disease.

RESULTS

From 2000 to 2020, 289 women were identified, 188 underwent reproductive organ-sparing cystectomy. No statistical differences were noted for clinical parameters or presence of variant histology for organ-sparing (ROS) and nonorgan-sparing (non-ROS). Positive margin rates did not differ for ROS and non-ROS; 4.3% vs. 7.9%, P = .19, respectively. Median RFS was not statistically significantly different for ROS vs. non-ROS (26.1 vs. 15.3 months) P = .937 hazard ratio (HR) 1.024. CSS was not statistically different for ROS vs. non-ROS (36.3 vs. 28.6 months), P = .755 HR 0.9. OS was not statistically different for ROS vs. non-ROS (25.8 vs. 23.8 months), P = .5 HR = 1.178. Variant histology did not change survival (HR 1.1, P = .643).

CONCLUSION

In this analysis, ROS in women with advanced disease did not increase positive margin rates or decrease RFS, CSS, or OS compared to non-ROS. Variant histology did not decrease survival odds. Based on preoperative assessment and intraoperative findings, ROS in patients with variant histology and advanced disease should be considered.