Neuroendocrine tumors (NETs) are a type of cancer that can develop from neuroendocrine cells. These tumors can occur anywhere in the body, but are most commonly found in the gastrointestinal (GI) tract, lungs, and pancreas. They can also occur in other parts of the body, such as the thyroid, adrenal glands, thymus, and lymph nodes.
Pancreas
NETs of the pancreas are the most common type of NET. They typically grow slowly and can remain undetected for many years. The symptoms of pancreatic NETs can include abdominal pain, weight loss, fatigue, and jaundice.
Gastrointestinal Tract
NETs of the GI tract are the second most common type of NET. These tumors usually occur in the appendix, small intestine, or rectum. Symptoms of GI NETs can include constipation, diarrhea, abdominal pain, and blood in the stool.
Lungs
NETs of the lungs are the third most common type of NET. These tumors can cause coughing, chest pain, and shortness of breath. They can also cause a buildup of fluid in the lungs, which can lead to difficulty breathing.
Other Parts of the Body
NETs can also occur in other parts of the body, such as the thyroid, adrenal glands, thymus, and lymph nodes. Symptoms vary depending on where the tumor is located. For example, tumors in the thyroid can cause swelling in the neck, while tumors in the adrenal glands can cause fatigue and weight gain.
NETs are a serious form of cancer and can be difficult to diagnose. If you have any symptoms that concern you, it is important to speak to your doctor. Early diagnosis and treatment can help improve the chances of a successful outcome.