Figure 1. a–d.

Colonoscopic and histologic findings for the ileocecal junction showing well-demarcated deep ulcers with clean bases (a) and diffuse lymphoid infiltration and lymphoid hyperplasia of the lamina propria (H&E stain, ×100) (b). (c, d) Repeat colonoscopy revealed multiple ulcers in the descending colon (c), and the corresponding histopathology revealed chronic inflammation with multiple erosion and shallow ulcers (×40) (d).