Endoscopy (including a jejunal biopsy) revealed a macroscopically and histologically normal upper gastrointestinal tract; however, ileocolonoscopy revealed the presence of multiple aphthous ulcers ...

Endoscopic image demonstrating diffuse aphthous ileitis in the neoterminal ileum. After the patient's colonoscopy, IFX therapeutic drug monitoring was performed.

Diffuse aphthous ileitis with diffusely inflamed mucosa: i4: Diffuse inflammation with already larger ulcers, nodules, or narrowing ...