Upper gastrointestinal bleeding as the initial manifestation of gastroenteropancreatic neuroendocrine tumors.

A 78-year-old man presented with upper gastrointestinal bleeding, which was biopsy proven to be from a gastric neuroendocrine tumor. By the time of diagnosis, he developed liver metastasis and died 2 months later. Upper gastrointestinal bleeding is an uncommon feature in gastroenteropancreatic neuroendocrine tumor.