Fig. 1

A Colonoscopy shows large amount of bloody fluid at the end of the ileum; active bleeding points are difficult to be observed. B Computed tomography scan. Axial view showing submucosal edema involving the terminal ileum, with surrounding fat stranding, consistent with ileitis. Mucosal enhancement was preserved. C Surgery specimen revealing diffuse inflammatory changes with cobble-like signs and scattered superficial ulcerations on the surface of the terminal ileum. D Pathological examination shows diffuse ulceration and erosions in the mucosa with moderate eosinophilic and neutrophil infiltrates