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Fig. 2 | Diagnostic Pathology

Fig. 2

From: Multiple lesions of gastrointestinal tract invasion by monomorphic epitheliotropic intestinal T-cell lymphoma, accompanied by duodenal and intestinal enteropathy-like lesions and microscopic lymphocytic proctocolitis: a case series

Fig. 2

Patient 1 (ac). a: A diffuse infiltrate of small to medium-sized atypical lymphocytes and many atypical IELs are seen in the duodenal (a) and cecal (b) mucosa. c: Small intraepithelial lymphocytes are scattered in the non-neoplastic ascending colonic mucosa, indicating lymphocytic colitis. Patient 2 (d, e). d: Duodenal enteropathy with atrophic villi and increased IELs. e: Many small CD8-positive IELs are seen in the duodenum (a, b, c, d: H&E stain; e: immunohistochemistry, hematoxylin stain)

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