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Cytomegalovirus Infections in Patients Diagnosed with Inflammatory Bowel Disease
Melike İnan-Hekimoğlu1, Elif Mukime Sarıcaoğlu1, Güle Çınar1
1Department of Infectious Diseases and Clinical Microbiology, Ankara University School of Medicine, Ankara, Türkiye.
Objective:
The impact of cytomegalovirus (CMV) on inflammatory bowel disease (IBD) flares remains a matter of debate. This study aimed to evaluate patients with CMV infection who presented with IBD exacerbation in terms of diagnosis and treatment and investigate the importance of CMV DNA levels in colitis development.
Materials And Methods:
Patients who were followed up with IBD and examined with clinical suspicion of CMV colitis at a university hospital between January 2016 and December 2021 were retrospectively scanned. This study included all patients who underwent colonoscopic biopsy with a preliminary diagnosis of CMV colitis and compared those with colitis detected histopathologically with those without colitis.
Results:
Thirty-nine patients with IBD were included in the study. No statistically significant difference was observed regarding the two groups' demographic data, clinical findings, and outcomes. The median serum CMV DNA level in patients with CMV colitis was 104 copies/mL, which was lower than in patients without colitis (1216 copies/mL) (p=0.008). Among patients with CMV colitis, CMV DNA levels were negative or low in 16 (61.5%).
Conclusion:
In patients with IBD, CMV colitis may not always be accompanied by CMV viremia. Therefore, negative or low serum CMV DNA levels are not sufficient to exclude CMV colitis. In case of high clinical suspicion, further examinations should be planned.
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