Intestinal polyps 3cm to 4cm serious. Intestinal polyps are lesions on the surface of the intestinal mucosa, intestinal polyps 3cm to 4cm belong to the larger polyps, it is easy to cause some obvious symptoms, such as abdominal discomfort, abdominal distension, change in bowel habits, blood in the stool, etc., and can even cause intussusception, intestinal obstruction, intestinal bleeding, severe diarrhea, affecting the patient’s quality of life and work, which belongs to the more serious situation. For example, if intestinal polyp patients have blood in stool for a long time, it will also cause anemia, and if the amount of bleeding is large, it will also cause dizziness, shock and so on. In addition, intestinal polyps have a malignant tendency, especially for polyp size diameter ≥ 2cm, adenomatous polyp patients, the malignant rate of more than 50%. Therefore, such a large intestinal polyp should be treated in time. Usually resected and pathologically examined under the condition of enteroscopy, if malignant changes are found and the condition is serious, open abdominal surgery is needed to treat the polyp and clear the peripheral lymph nodes, and radiotherapy and chemotherapy (e.g., 5-FU, mitomycin, etc.) should be given after the operation. By endoscopic treatment mainly.