Hormone-producing tumours of the gut.
D005935:Glucagonoma / Q000503:physiopathology / Q000628:therapy; D006801:Humans; D007340:Insulinoma / Q000503:physiopathology / Q000628:therapy; D010190:Pancreatic Neoplasms / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy