[Intussusception Due to Inflammatory Polyp in the Ileum after ESD for Rectal LST].

A 69-year-woman was admitted to the clinic in August 2018 because of general fatigue and low appetite.She had occult blood-positive and was referred to our hospital for further investigations.There was LST in the rectum for which colonoscopy and ESD were performed.She had abdominal pain and slight fever on postoperative day 1.Abdominal CT showed an intussusception in the ileum.We could not achieve endoscopic de-torsion and carried out laparotomy.The intussusception was found to be strangulated due to inflammatory polyp and mesenteric adhesion.The affected portion was resected.Although treatment for low hypoalbuminemia and neurogenic cystitis was required, she was discharged on postoperative day 28.