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Although radiation therapy for pelvic cancer leads to improved outcomes, it may cause radiation enteritis. Radiation enteritis is classified as early and late reaction. Late reaction indicate progressive and irreversible changes caused by ischemic changes of the intestinal mucosa. Severe cases require a surgical treatment, which is challenging because of severe adhesions and a high risk of suture failure. In addition, the postoperative course may be unfavorable in some cases. We performed surgery for 4 radiation enteritis cases; however, the postoperative course was unfavorable in 2 cases because of impaired absorption and ileus of the remaining short bowel. These patients could not eat adequately after discharge; therefore, we needed to explain and make them understand the benefits and disadvantages of radiation therapy.
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