Rectal neuroendocrine tumor g1 is a kind of tumor of the rectum derived from neuroendocrine cells, and according to its nuclear schizophrenic image it can be further classified into G1, G2, and G3 grades, with the least malignant degree in G1 grade and the most malignant degree in G3 grade. Rectal neuroendocrine tumor refers to a kind of tumor whose site is in the rectum and the source of cancer cells is neuroendocrine cells, and it can be classified into G1, G2 and G3 according to its nuclear schizophrenic image. Usually, early stage G1 and G2 rectal neuroendocrine tumors can be resected by surgery, and the recurrence rate is relatively low, while G3 tumors have a high postoperative recurrence rate. Rectal neuroendocrine tumors can have no obvious symptoms in the early stage, and only yellow, hard bulge on the surface of intestinal mucosa can be found under enteroscopy. In the advanced stage of the disease, patients can have abdominal pain, diarrhea, blood in stool, perianal pain, anal swelling and other symptoms. If the diagnosis of rectal neuroendocrine tumor grade G1 is confirmed, please follow the doctor’s instructions for treatment.