S42 Tailoring Crohn’s Disease Surveillance After Ileocolic Resection: The Importance of Inflammatory Biomarkers

Abstract

, immunohistochemical staining for IgG4 was performed on the patient ’ s colon biopsies, which revealed a high percentage of the IgG cells in the lamina propria with . 50% positivity for IgG4. This con fi rmed the patient ’ s IgG4 mediated colitis, and he has now started rituximab therapy. Conclusions: We demonstrate a case of IgG4-RD misclassi fi ed as CD and GPA and emphasize the importance of consideration of this rare disorder in appropriate patients. Clinical follow-up and response to rituximab will be described at the time of this case presentation.