LAUSR

We herein report a rare case of acute hemorrhagic rectal ulcer (AHRU) complicated by cytomegalovirus enteritis following steroid pulse therapy for interstitial pneumonia. An 86-year-old woman underwent steroid pulse therapy for interstitial pneumonia. She was bedridden with dyspnea and suddenly developed melena. Colonoscopy revealed AHRU, which did not improve with conservative treatment, but did improve with ganciclovir administration for cytomegalovirus enteritis. Pulmonologists administer steroid pulse therapy for interstitial pneumonia; however, this gastrointestinal complication does not receive its due attention. Delayed treatment of this complications can be fatal. Caution should be taken when administering steroid pulse therapy to bedridden patients with interstitial pneumonia.