Gastrointestinal Cancers

Gastroenteropancreatic neuroendocrine tumors (GEP-NETs), also known as carcinoids and islet-cell tumors, are tumors of the neuroendocrine cells that occur in the gastrointestinal (GI) tract. GEP-NETs are heterogeneous and complex. Although relatively rare, GEP-NETs are more common than other tumors of the GI tract, including stomach and pancreatic carcinomas combined.