Extraperitonealization of ileal conduit reduces parastomal hernia after cystectomy and ileal conduit diversion

Development and preliminary evaluation of a novel procedure for creation of an ileal conduit stoma aimed at preventing parastomal hernia

OBJECTIVES

Our previous study suggested that the operative procedure is critical for the development of parastomal hernia. We developed a novel procedure for the creation of an ileal conduit stoma to prevent parastomal hernia. Herein we evaluate the efficacy and safety of the procedure.

METHODS

A total of 113 Japanese patients underwent radical cystectomy and ileal conduit diversion for bladder cancer from January 2017 through December 2021 at our institution. After excluding those with incomplete data, 103 patients consisting of 46 (44.7%) with the conventional procedure and 57 (55.3%) with the novel procedure were consecutively enrolled. The main points of the novel procedure are as follows: (1) the passage of the ileal conduit is ≤2.4 cm in diameter in principle; (2) the posterior rectus sheath and peritoneum are vertically incised 2 cm laterally from the middle of the stoma site to make an oblique passage for the ileal conduit; and (3) the anterior rectus sheath and posterior rectus sheath with peritoneum are fixed to the ileal conduit separately.

RESULTS

Radiography-based parastomal hernia was observed in 11 patients (10.7%) with a median follow-up of 22.0 months. The incidences of parastomal hernia were 3.5% and 19.6% in the novel and the conventional procedure groups, respectively (p = 0.011). The former had a significantly lower cumulative incidence of parastomal hernia (p = 0.008, log-rank test). No specific complications associated with the procedure were observed.

CONCLUSIONS

The results of the preliminary cohort study suggest that the novel procedure is safe and effective for the prevention of parastomal hernia.

Extraperitonealization of the ileal conduit decreases the risk of parastomal hernia: A single-center, randomized clinical trial

Parastomal hernia (PSH) is a common complication in patients receiving ileal conduit urinary diversion after radical cystectomy. In this randomized controlled clinical trial, we validate our previous finding that extraperitonealization of ileal conduit decreases incidence of PSH. In total, 104 consecutive patients undergoing radical cystectomy at Sun Yat-sen University Cancer Center are randomized 1:1 to receive either modified (extraperitonealized) ileal conduit (n = 52) or conventional ileal conduit (n = 52). Primary endpoint is incidence of radiological PSH during follow-up. Incidence of radiological PSH is lower in the modified group than in the conventional group (11.5% vs. 28.8%; p = 0.028) after a median follow-up of 32 months, corresponding to a hazard ratio of 0.374 (95% confidence interval: 0.145-0.965, p = 0.034) in the modified conduit group. The results support our previous finding that extraperitonealization of the ileal conduit is effective for reducing risk of PSH in patients receiving ileal conduit diversion.

Repair of parastomal hernia after Bricker procedure: retrospective consecutive experience of a tertiary center

BACKGROUND

Ileal conduit parastomal hernias (ICPHs) are frequent after radical cystectomy with ileal conduit urinary diversion, but their management is debated. This study aimed to review the results of ICPH repair according to Sugarbaker or Sandwich techniques, with special interest in ICPH recurrence and urological complications.

METHODS

The authors reviewed a consecutive series of patients undergoing ICPH repair between January 2014 and December 2020. Primary endpoints were ICPH recurrences at clinical exam and cross-sectional abdominal computed tomography (CT) scans. Secondary endpoints were any other complications possibly related to the ICPH repair.

RESULTS

Twenty-three patients underwent ICPH repair surgery (16 Sugarbaker and 7 Sandwich techniques) during the study period. Sixteen patients underwent a primary laparoscopic approach. All but one patient underwent at least one abdominal CT during the follow-up. Median clinical and CT scan follow-up times were 57 and 50.5 months, respectively. Clinical and CT ICPH recurrence rates were 4.5% and 13% at 5 years, respectively. Eighteen patients (78%) suffered no urological complications during the follow-up period, but three patients (13%) needed redo surgery on the urinary ileal conduit.

CONCLUSION

The modified Sugarbaker or Sandwich techniques might be considered as promising techniques for ICPH repair with a low rate of recurrence. The urological complications, and particularly the ileal conduit-related issues, need to be evaluated in further studies. Controlled and prospective data are required to compare the Sugarbaker and Sandwich techniques to the Keyhole approach for ICPH repairs.