Figure 1.

Endoscopic images made during ileocolonoscopy. Scope type: GIF-HQ190 (Olympus, Tokyo, Japan). (A) Image taken at the terminal ileum with multiple large elevated lesions with ulceration on top. The white arrows illustrate these lesions. (B) Image taken in the ileum. White arrows point towards the border of superficial mucosal ulceration with normal mucosa. (C) Image taken in the colon showing a swollen and erythematous ileocecal valve with small ulcerations. The colonic mucosa has an otherwise normal appearance. The white arrow points towards the ostium of the valve. (D) Image taken at the transition of the ileum to the colon. Several superficial mucosal ileum lesions can be observed, of which two examples have been denoted with a white arrow.