An adenocarcinoma of the stomach arising on a background of intestinal metaplasia. Microscopically, it is characterized by a glandular pattern and it closely resembles a colonic adenocarcinoma. Grossly, it tends to be nodular, polypoid or ulcerated. The disease is gastric intestinal type adenocarcinoma (Monarch Disease Ontology entry MONDO_0005037). Also known as: gastric intestinal-type adenocarcinoma, intestinal adenocarcinoma of stomach, intestinal adenocarcinoma of the stomach, intestinal gastric adenocarcinoma, intestinal stomach adenocarcinoma.