An unusual cause of colonic ulceration

Abstract

Blood tests showed elevated C reactive protein of 56 mg/L and normal full blood count, electrolytes, liver biochemistry, iron and B12 stores. HLA-B51 and interferon gamma release assay for Mycobacterium tuberculosis were negative. Faecal calprotectin was elevated at 583 µg/g. CT of the abdomen and pelvis revealed bowel wall thickening in the caecum and ascending colon with mesenteric lymphadenopathy (figure 1A). A gastroscopy showed …