Cytomegalovirus colitis in a patient with AIDS: CT findings

This case report describes an AIDS patient with a cytomegalovirus (CMV) colitis. A CT scan of the abdomen showed a thick colonic wall, producing a target sign. CT scanning of the abdomen may be useful in patients suspected of CMV rectocolitis in order to decide whether a rectosigmoidoscopy or a complete colonoscopy should be performed. A definitive diagnosis of CMV rectocolitis can only be made by intestinal biopsy.