This duodenal polyp is formed by gastric heterotopia (oxyntic mucosa; nodular gastric heterotopia). www.innovativesciencepress.com Case...

This neuroendocrine carcinoma of the appendix arose in association with an adenomatous precursor. Case provided by Dr. Elizabeth...

A tiny "seedling" gastrointestinal stromal tumor of the stomach, an incidental finding in a sleeve gastrectomy....