Carcinoid tumor is a kind of silver-loving cell tumor that occurs mainly in the gastrointestinal tract, but may also involve other organs throughout the body, and is itself a malignant tumor, so there is no such thing as how many years it takes to go from benign to malignant. Carcinoid tumors may be caused by genetic factors, multiple endocrine adenoma syndrome type 1, retinal and central nervous angiomatosis, and neurofibromatosis type 1. In early stage, there are usually no obvious symptoms. If there is occupancy and metastasis, it may manifest as right lower abdominal pain, abnormal stool, upper abdominal pain, indigestion, abdominal mass, gastrointestinal bleeding, cough, coughing and chest tightness. Laboratory examination, histopathological examination and nuclear imaging can be done at the hospital to confirm the diagnosis. After the diagnosis, the patient can be treated by tumor resection, and chemotherapy is also needed after the surgery, and the drugs often used in chemotherapy include fluorouracil injection, cisplatin injection, etc. After surgery, patients need to maintain a good attitude and go to the hospital for regular review to see if there is any recurrence of the disease. In terms of diet, you can eat more protein and vitamin-rich foods, such as eggs, milk, apples, vegetables, etc. You should not eat greasy and spicy stimulating foods, such as fatty meat, chili peppers, or smoke and drink, and you need to pay attention to rest and avoid overexertion.