Cytomegalovirus proctitis in a diabetic.

We describe an unusual case of cytomegalovirus (CMV) proctitis in an elderly adult with uncontrolled diabetes mellitus, who had not received immunosuppressive therapy. Barium study and computed tomography showed large ulceration and sinus tract involving the rectum. CMV colitis is thought to occur almost exclusively in immunosuppressed persons. In a nonimmunosuppressed host, the infection is rarely reported.