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Cytomegalovirus (CMV) colitis occurs almost exclusively in immune-compromised patients namely, HIV infection, immunosuppressant therapy after organ transplantation, anti-cancer chemotherapy, and longterm steroid user. Some patients with solid tumor have gastrointestinal CMV disease without anti-cancer chemotherapy. A 64-year-old male patient underwent surgery due to sigmoid colon cancer. On histopathologic examination of surgical specimen, CMV colitis was found in the colon. The AJCC tumor stage was II. Although CMV colitis is rarely associated with colon cancer, it maybe considered in patients with combined colitis with colorectal cancer.


Cytomegalovirus (CMV) colitis occurs almost exclusively in immune-compromised patients namely, HIV infection, immunosuppressant therapy after organ transplantation, anti-cancer chemotherapy, and longterm steroid user. Some patients with solid tumor have gastrointestinal CMV disease without anti-cancer chemotherapy. A 64-year-old male patient underwent surgery due to sigmoid colon cancer. On histopathologic examination of surgical specimen, CMV colitis was found in the colon. The AJCC tumor stage was II. Although CMV colitis is rarely associated with colon cancer, it maybe considered in patients with combined colitis with colorectal cancer.