Fig. 1.

a Colonoscopy image of the sigmoid colon showing exudative ulcers. b There is significant active inflammation with extensive crypt loss. They are observed as decreased in size and number, in association with the mucin loss of the crypt epithelia. These findings are consistent with ischemic-like colitis (haematoxylin and eosin). c Prominent neutrophil and eosinophil infiltration and increased apoptosis are observed in the crypt epithelia (haematoxylin and eosin)