Endoscopic Treatment of Ileal Pouch Sinus.

BACKGROUND AND AIMS: Pouch sinus is a serious complication in patients undergoing ileal pouch-anal anastomosis. The aim of this study was to verify the efficacy and safety of endoscopic needle knife sinusotomy (NKSi) in the management of pouch sinus.

METHODS

All consecutive patients with a pouch sinus treated with NKSi from 2008 to 2016 were identified. The primary outcomes were complete healing of the sinus and pouch survival.

RESULTS

A total of 109 patients were included. During a median follow-up of 2.1 years (interquartile range: 0.7-4.4), 54 (49.5%) patients achieved complete healing and 20 (18.3%) patients had partial healing, Twenty-two (20.2%) patients developed sinus-related pouch failure. In multivariable analysis for the sinus healing, Crohn's disease of the pouch was a risk factor [odds ratio (OR): 0.3, 95% confidence interval (CI): 0.1-0.8), whereas a longer interval between NKSi (OR: 1.1, 95%CI: 1.0-1.1) and high body mass index (OR: 1.2, 95%CI: 1.0-1.3) were protective factors. In the multivariable analysis for surgery-free survival, previously documented acute anastomotic leak (OR:3.5, 95%CI: 1.2-10.4), toxic megacolon (OR: 7.4, 95%CI: 1.9-29.1), an increased length of sinus (OR: 1.4, 95%CI: 1.0-2.0), and increased duration from sinus diagnosis to NKSi (OR: 2.6, 95%CI: 1.1-6.2) were risk factors; and a longer interval between NKSis (OR: 0.9, 95%CI: 0.9-0.99), and concurrent use of dextrose 50% (OR: 0.2, 95%CI: 0.04-0.6) and doxycycline during the NKSi procedure (OR: 0.2, 95%CI: 0.04-0.7) were protective factors. NKSi-associated complications were reported in 6 (1.8% per procedure) cases.

CONCLUSIONS

NKSi is an effective and safe procedure for treating pouch sinus.