A 24-year-old male underwent bone marrow transplantation for severe aplastic anemia. Posttransplantation complications included severe graft-versus-host disease and cytomegalovirus (CMV) infection manifested by gastrointestinal bleeding and apparent pneumonitis. Massive rectal bleeding necessitated exploratory laparotomy at which time a right colon resection was performed. Fifteen cecal ulcers were present which on histologixc examination revealed numerous cells containing characteristic intranuclear inclusions. Life-threatening gastrointestinal lesions associated with CMV infection will be seen with increasing frequency as more patients undergo the severe immunosuppression associated with bone marrow and organ transplantation. Prompt recognition and expeditious surgical management will result in improved survival in this high-risk population.
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