PMC4073030_01
(A) Patchy mucosal erythema, edema and loss of vascular pattern of the descending colon. (B) Granularity of the ascending colon with post-inflammatory polyps
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PMC4073030_01_AnnGastroenterol-27-270-g001.jpg
F1
On endoscopy, patchy erythema, edema and nodularity was seen throughout the colon and terminal ileum (Fig. 1A). Few inflammatory polyps were noted in the ascending colon (Fig. 1B).
(A) HE X 25. Colonic biopsies. Dense inflammation of lamina propria with aggregation of eosinophils. (B) CD117 x 400. (Envision / DAKO 1:250). Dense infiltration of mast cells >15 HPF
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PMC4073030_01_AnnGastroenterol-27-270-g002.jpg
F2
Immunohistochemical staining was positive for CD117+ and CD2+ (Fig. 2A, 2B).