Cytomegalovirus Duodenitis in a Renal Transplant Patient Presenting with Signs of Gastrointestinal Bleeding: A Case Report

Cytomegalovirus (CMV) is a common virus that causes opportunistic infections in many organ systems in immunocompromised patients. CMV infections are also an important problem in renal transplant patients. CMV infection often causes complications in gastrointestinal system (GIS). CMV duodenitis is a very rare involvement in the GIS. CMV infection can lead to complications, such as erosion, ulcer, adhesion, perforation and bleeding in the bulbus and duodenum. Our case was admitted with the signs of upper GIS bleeding 10 months after renal transplantation. Ulcers in the antrum and bulbus were observed in the endoscopic examination, typical incision bodies for CMV and intranuclear CMV immunoreactivity were detected in duodenal biopsies, and complaints regressed with antiviral treatment.