Figure 4. Duodenal mucosal biopsy showing a severe “flat” mucosal biopsy lesion with “crypt hyperplastic villus atrophy” (i.e., Marsh 3) and intra-epithelial lymphocytosis characteristic of untreated celiac disease. Hematoxylin & Eosin, 100X

From

Intra-epithelial Lymphocytosis of the Ileum: A Pathological Clue to Clinically Occult Adult Celiac Disease

Hugh J. Freeman, Doug Webber

International Journal of Celiac Disease. 2017, 5(1), 40-42 doi:10.12691/ijcd-5-1-6