Su1276 Use of Anti-TNF Therapy in Patients With Crohn's Disease Complicated by an Abdominal Phlegmon

when compared to UC patients (29/120, 242%, p < 0.001). The following types of EIM were observed: 37/266 (13.9%) peripheral arthritis / arthralgia (17.8% in CD vs. 9.2% in UC); 5/266 (1.9%) uveitis / iritis (2.7% in CD vs. 0.8% in UC; 26/266 (9.8%) oral aphthous ulcers (12.3% in CD vs. 6.7% in UC); 2/266 (0.8%) ankylosing spondylitis (0.7% in CD vs. 0.9% in UC); 5/266 (1.9%) erythema nodosum (2.7% in CD vs. 0.8% in UC); 2/266 (0.8%) pyoderma gangrenosum (0.7% in CD vs. 0.8% in UC). Conclusion: EIM appear in pediatric IBD patients in similar prevalence when compared to the adult population. As a general rule, EIM are more frequently observed in pediatric CD patients when compared to pediatric UC patients. The most frequent EIM are peripheral arthritis / arthralgia, followed by oral aphthous ulcers.