What does carcinoid mean?

Carcinoid is the most common type of neuroendocrine tumor. It occurs mostly in the gastrointestinal tract and pancreas. It can also occur in lung tissue. Carcinoid accounts for about 50% of endocrine tumors in the human digestive tract. According to different origins, it can be divided into three parts: foregut, midgut and hindgut. Carcinoid patients generally produce specific serotonin secretion and bradykinin. Clinically, persistent headache, flushing of the skin on the face and trunk may be directly related to alcohol, strenuous activity, nerve stress, etc. Some patients may also show diarrhea, which may be related to increased intestinal motility.