Medium power light micrograph of a small sessile adenoma located in the gastric antrum. The darkly-staining dysplastic epithelium is seen on the superficial layer while residual antral epithelium with a few cystic tubules is seen in the basal half.
From Lewin KJ, Appelman HD. Tumors of the esophagus and stomach. Atlas of tumor pathology (electronic fascicle), Third series, fascicle 18, 1996, Washington, DC. Armed Forces Institute of Pathology.