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. 2018 Nov 1;19:303. doi: 10.1186/s12882-018-1116-x

Fig. 2.

Fig. 2

Macroscopic and light microscopic images on autopsy. Longitudinal and annular ulcers are observed in the sigmoid-colon (arrows) (a). Light microscopy shows hyperplastic foveolar epithelium around the ulcers, with lymphocytic aggregates near the muscularis mucosa (b) and cryptitis with crypt abscess formation (arrows) (c)