Fig. 2.

Colonoscopy findings at week 2 of tacrolimus administration. The scope was inserted up to the end of the ileum. No reddening or erosion was noted at the end of ileum. Bauhin's valve was slightly dilated. In the ileocecum (a) over the ascending colon, mild mucosal edema was observed. In the transverse colon (b) over the sigmoid colon, edema was moderate and extensive ulcers were observed, but the mucosa of the ulcer floor was regenerated and flattened. Only partial reddening was noted (c).