1.What is radiation enteritis Radiation enteritis has become radiation intestinal injury, in the abdomen and pelvic tumors cervical cancer, rectal cancer, prostate cancer, pancreatic cancer, etc. after radiation therapy for different degrees of radiation damage to the intestine. The main manifestation of radiation enteritis is that the gastrointestinal tract is an organ that is sensitive to radiation, and the manifestation varies with the time of radiation damage, which is the early manifestation of radiation damage in the process of radiation therapy and within 3 months after the end of radiation therapy. The main symptoms are abdominal pain, diarrhea, watery diarrhea in the stool, and red blood cells in the laboratory. If surgery has been performed before radiotherapy, incomplete intestinal obstruction may occur. Symptoms that appear more than six months after the end of radiotherapy are the late manifestations of radiation injury, mainly manifested by repeatedly aggravated mucus stools and bloody stools, and in severe cases, complicated by intestinal obstruction. Since the sciatic nerve and femoral nerve, which are important nerves of the lower limbs, also pass through the pelvis, severe radiation injury is often accompanied by pain and sensory-motor disorders of the lower limbs. 3.Mainly appearing parts Because of the intestinal parts and functions, the small intestine is constantly peristaltic, so each part receives a small dose of radiation, while the colon, especially the sigmoid colon and rectum are basically not displaced, in addition, the site of radiation treatment is also mostly in the vicinity, so the possibility of radiation injury is obviously higher. Radiation injury is a normal complication in the process of tumor treatment, so don’t think it is a problem of radiation treatment and doubt the treatment plan. In the early stage, antibacterial, antioxidant drugs and multivitamins should be applied, and herbal medicine can be used to stop diarrhea and other treatments. Most patients can avoid serious complications with early control. Once symptoms such as blood in the stool appear in the late stage, treatment should be administered as soon as possible. Treatment should begin with anti-inflammatory, microcirculatory, and tissue growth promoting drugs. After determining the main site of intestinal injury through colonoscopy, local application of drugs should be reserved for enema, and enema drugs should be mainly applied to antioxidants, hemostatic, astringent and anti-inflammatory drugs. 5. Attention to problems During the treatment process, attention should be paid to the control of the patient’s own underlying disease, although it is radiation injury, but still to control the recurrence and growth of the tumor. The timing of treatment is as early as possible when the tumor can be controlled. Once intestinal obstruction occurs due to radiation injury, only surgical fistula can be performed.