Gastrointestinal neuroendocrine tumors
Gastrointestinal neuroendocrine tumors, known as GI NET, are also called carcinoids or carcinoid tumors. They are a type of neuroendocrine cancer that starts in different parts of your digestive system, called the gastrointestinal (GI) system. The GI system includes the stomach, small intestine, colon, and rectum.
Most of the time, gastrointestinal neuroendocrine tumors (carcinoids) are small and may be hard to find. Sometimes they are found during other procedures like a colonoscopy or surgery for other conditions.