Figure Legends
Fig. 1. The initial CT scan reveals thickening of the wall of
the descending colon (arrowhead) and free air around the colon and in
the retroperitoneum (arrow). CT, computed tomography.
Fig. 2. The macroscopy of the resected colon reveals multiple
linear ulcers called ”mucosal tears ” in CC (arrowhead), and an arrow
indicates the perforation. This revealed no diverticulum or tumor in the
colon.
CC, collagenous colitis.
Fig. 3. Histopathological examination revealed a thick
subepithelial collagen band by HE stains (a, arrows and dotted line).
This collagen band is stained blue by Masson trichrome stain (b arrow
heads).
HE stains, Hematoxylin and eosin stain