Neuroendocrine tumors that arise in the pancreas are called pancreatic neuroendocrine tumors or islet cell tumors. Pancreatic neuroendocrine tumors can include: nonfunctional tumors, insulinomas, glucagonomas, gastrinomas, VIPomas, somatostatinomas, GHRHomas, and other less frequent tumors. Pancreatic neuroendocrine tumors are usually indolent (slow-growing) by nature and develop over the course of many years, however, aggressive, fast growing pancreatic neuroendocrine tumors exist. To learn more about the difference between pancreatic cancer and pancreatic neuroendocrine cancer, read this blog post by Lauren Erb, Director of Research. For a general guide to Pancreatic NETs, including symptoms, diagnosis, and treatment options, please refer to our Pancreatic NETs document below.