label: gastric adenocarcinoma and proximal polyposis of the stomach
label_lc: gastric adenocarcinoma and proximal polyposis of the stomach
description: "A rare hereditary gastric cancer characterized by proximal gastric polyposis and increased risk of early-onset, intestinal-type adenocarcinoma of the gastric body, with no duodenal or colorectal polyposis. This is an n-of-1 use case where only one patient or family has been described with this disorder."