P287 Clinical characteristics and outcomes of ileal pouch–anal anastomosis (IPAA) inflammation in a Latin American (LA) IBD reference Center (I.

SambuelliMD, A.(1)*;Gil , A.(1);Rohwain, M.J.(2);Candel , I.(1);Huernos , S.(1);Tirado , P.(1);Negreira, S.(1);

(1)IBD Section - Bonorino Udaondo Hospital, IBD Section - Clinical Department, Buenos Aires, Argentina;(2)IBD Section - Bonorino Udaondo Hospital, IBD Secrion - Clinical Department, Buenos Aires, Argentina;


Restorative proctocolectomy with ileal pouch–anal anastomosis (IPAA) can be associated with a wide spectrum of complications, ranging from a frequently mild acute pouchitis (AP) to Chronic pouch inflammation (CPI, either antibiotic dependent or refractory, CADP and CARP respectively) and Crohn's disease like pouch inflammation (CDLPI). The pathogenesis, still largely unknown, probably is multifactorial, and environment may play a role.

We aimed to describe clinical characteristics and outcomes of IPAA inflammation in a Latin American (LA) IBD reference Center. Our main focus is CDLPI, because, despite of UC is reported more frequent in LA, epidemiology is changing, and notably, colon location (within CD) reach the half of the CD casuistic in our hospital, as well as other Argentina locations (Cordoba) and Uruguay, a neighbor Country. Probably, this epidemiological feature could impact in our patient´s evolution.


Our hospital has a Coloproctology Team pioneer of IPAA surgery in Argentine and as Clinical IBD Service, we performed a revision in our electronic data base (included from 1990 to current date, and detected 437 pts. with IPAA. Criteria were; modified PDAI (for disease activity), for CPI and CDLPI we adopted that of Shen B, Clin. Gastrienterol hepatol 200, 6:145-58.  



We compare 46 CDLPI with 24 CPI pts. (CADP and CARP) and 24 AP.  A total of 55 M, 39 F, were evaluated for demographic data and disease complications.  Mean age ±SD at complication:  CDLPI 33.8±13.8, CPI 34.2±11.2, AP 40.1±13.7, (NS for gender and Age). Median time (IQR) up to each one of 3 complications: 1.6 (4.19), 2.09 (7.17) and 1.34 (2.67), respectively (NS, Median test). Follow–up time was similar: 20.11 (10.9), 13.7 (12.2), 13.9 (15.6), respectively. CDLPI presented inflammatory pattern in: 37 (80.4%), stricturing in 6 (13.04%), fistulizing in 16 (34.8%) Perianal complication: 43.5%.

Pre-pouch ileitis in CDLP: 26 (56 5%) vs. CPI 1(4.2%), in AP 0% (p.00000), prepouch strictures (13.04% vs. 0%), significant different, as well as prepouch fistulas (17.4%), with suboclusion in 29% Pouch vaginal fistulas and pouch-cutaneous in 1/5 of patients. Cuffitis in 19%. The original IBD was more severe and extensive p <0.02 in the mentioned subgroup.

As regard treatment, IMM treatment in CDLP: was required in 70% vs. 26% in CPI and biologics en 2/3 0.00016, 11% ≥2 biologics. Pouch failure (diversion and resection) was observed in 30% and 13% respectively.


We are a LA center with high CD prevalence. The complications of surgery must be taken into account.  IPAA revolutionized UC surgery, but close monitoring, and new research are required with the future hope of acting proactively.