# Poster Session II - A262 TREATMENT OF CROHN’S DISEASE-ASSOCIATED GASTRIC OUTLET OBSTRUCTION: A SCOPING REVIEW

## TL;DR

This review compares treatment options for a rare Crohn's disease complication called gastric outlet obstruction, finding that surgery is most effective but endoscopic dilation is a reasonable first step.

## Contribution

This is the first scoping review to systematically synthesize treatment strategies for Crohn's disease-associated gastric outlet obstruction.

## Key findings

- Surgery achieved the highest success rate (94%) for resolving Crohn's disease-related gastric outlet obstruction.
- Endoscopic balloon dilation (65-75% success) is a less invasive alternative often used as first-line treatment.
- Medical therapy alone showed lower effectiveness (44-50%) compared to surgical or endoscopic approaches.

## Abstract

Gastric outlet obstruction (GOO) is a rare complication of Crohn’s disease (CD), resulting from stricturing gastroduodenal disease. Management is complex, with medical, endoscopic, and surgical options reported.

To synthesize evidence on the management of CD-associated GOO and compare treatment success rates.

Following PRISMA guidelines, MEDLINE, PubMed, and Embase were searched for studies describing GOO secondary to CD. Case reports, case series, and observational studies reporting treatment outcomes were included. Non-English studies were excluded.

Of 282 studies screened, 57 studies comprising 230 patients were included. We identified 295 treatment trials for CD–related GOO. Success was defined as complete resolution of symptoms and absence of recurrence at the end of the follow-up period. Outcomes for treatment regimens are summarized in Table 1 and Figure 1. Surgery achieved the highest success (94%, n = 80 for surgery alone; 100%, n = 7 for surgery plus medical therapy), and was offered as first-line therapy in 41% of cases. Endoscopic balloon dilation (EBD) achieved 65% success alone (n = 133) and 75% when combined with medical therapy (n = 20). Medical therapy alone with disease-modifying drugs was less effective (50%, n = 26 for single agents; 44%, n = 16 for combination regimens), while supportive therapy alone (n = 13) did not achieve any resolution. Considering each modality independently of the regimen, success rates were highest for surgery (94%), followed by TNFα inhibitor biologics (68%) and EBD (66%). EBD alone was the most common first-line approach resulting in complete resolution of GOO.

A262 Outcomes of treatment regimens for Crohn’s disease–associated gastric outlet obstruction

Medical therapy includes disease-modifying drugs such as steroids, immunomodulators, and biologics.

Supportive treatments include anti-inflammatories (e.g., 5-ASA), proton pump inhibitors, and H2 blockers.

Surgery provides the most durable resolution of CD-related GOO. However, EBD is frequently effective and less invasive, making it a reasonable initial option. Medical therapy alone is less effective, though regimens including TNFα inhibitor biologics may have a role. This scoping review is the first to synthesize treatment strategies for this uncommon manifestation of CD.

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