Duodenal mucosal fragments showing almost diffuse villous atrophy as the intestinal villi are significantly shrunken or partially flattened (moderate/marked atrophy). The crypts (glands at the base of the villi) become deeper as the body tries to compensate for lost villi. There is increase in intraepithelial lymphocytes. No evidence of specific granulomas. No evidence of atypia or malignancy.
Atrophic duodenitis.
Soft tissue fragments collectively measured 0.6 cm, totally embedded.
Duodenum, Biopsy: