A condition in which the neuroendocrine cells develop into tumors.
A neuroendocrine tumor may grow slowly or aggressively and spread to other parts of the body.
Neuroendocrine tumors can affect the lungs, appendix, small intestine, rectum, and pancreas. Depending on where they are, symptoms range from skin eruptions to fluctuating blood sugar levels.
Treatment depends on the type of tumor. Some approaches may include surgery, radiation, and chemotherapy.