Wide base polyp 0.4cm is not very big, but it is not absolute, it is recommended that the patient go to the hospital for the appropriate examination, and then do the treatment. Wide base polyp refers to the wider base of the polyp, the size of 0.4cm is usually not very large, but the specific circumstances should be combined with their own symptoms, so it is not absolute, it is recommended that patients should go to the hospital in a timely manner to carry out the relevant examination, and according to the doctor’s advice to carry out the corresponding treatment. If the patient is found to be malignant, the patient can be treated through surgery, such as polyp electrolysis, ligation surgery and so on. It is recommended that patients maintain a good diet during the recovery process, and pay attention to warmth and timely hydration. The appearance of broad-based polyps, it is recommended to timely go to the hospital.