Cytomegalovirus colitis in immunocompetent patients

Jae Ho Park; Hee Seok Moon

doi:10.5217/ir.2018.16.3.504

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Images of the Issue Cytomegalovirus colitis in immunocompetent patients: Jae Ho Park, Hee Seok Moon; Intestinal Research 2018;16(3):504-505.
DOI: https://doi.org/10.5217/ir.2018.16.3.504
Published online: July 27, 2018

Division of Gastroenterology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea.

Correspondence to Hee Seok Moon, Division of Gastroenterology, Department of Internal Medicine, Chungnam National University School of Medicine, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea. Tel: +82-42-280-8049, Fax: +82-42-257-5753, mhs1357@cnuh.co.kr

• Received: January 12, 2018 • Revised: January 15, 2018 • Accepted: January 15, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Answer to the Images: Cytomegalovirus Colitis
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Question: A 63-year-old woman presented with left-sided abdominal pain and hematochezia noted over a week prior to hospitalization. She had been using antihypertensive medicine and did not report any other significant medical difficulties. A screening colonoscopic examination performed a year prior to presentation had been unremarkable. Abdominal CT showed segmental wall thickening with decreased enhancement of the proximal descending colon in addition to pericolic fat infiltration (Fig. A). Colonoscopic examination performed at Chungnam National University Hospital showed diffuse erythematous friable ulcerations located approximately 35 to 30 cm above the anal verge, and a biopsy was performed (Fig. B). Laboratory studies did not reveal any abnormalities including anti-human immunodeficiency virus antibodies.

What is the diagnosis of the ulcerative lesion in the colon?

Answer to the Images: Cytomegalovirus Colitis

Biopsy specimens were taken from the ulcerative lesions. Histopathological examination revealed atrophied crypts with cytomegalovirus inclusion bodies (Fig. C, H&E, ×200). The nucleus and cytoplasm of cells observed in the infected crypts were noted to be hypertrophied (Fig. D, H&E, ×400). Immunochemical examination showed positive nuclear staining for cytomegalovirus in an infected crypt (Figs E [×100] and F [×400], immunohistochemical staining).

Gastrointestinal (GI) involvement is usually secondary to the reactivation of latent infection in immunosuppressed patients. For example, patients who are treated with organ- or bone marrow-transplantation or are diagnosed with acquired immune deficiency syndrome, or those who use medicines such as immunosuppressants (anti-tumor necrosis factor antibodies, steroids) or chemotherapeutic agents. However, GI involvement is uncommon in immunocompetent patients. The cytomegalovirus (CMV) causes a variety of diseases in the lower GI tract such as colitis, ileitis, appendicitis, and colonic obstruction.1 2 3

The common presenting symptoms of CMV colitis are diarrhea, fever, abdominal pain, and approximately 50% of the patients demonstrate hematochezia.4

In a retrospective study comprising immunocompetent patients diagnosed with CMV colitis, the most common endoscopic findings were: well-demarcated ulcerations (50%), ulceroinfiltrative changes (25%), and pseudomembrane formation (25%).5

It is necessary to differentiate between CMV and ischemic colitis when an elderly patient presents with bloody diarrhea and abdominal pain.

Currently, the drugs available for treatment of CMV infection include ganciclovir, valganciclovir, foscarnet, and cidofovir. In immunocompetent patients diagnosed with CMV infection, ganciclovir is the most preferred antiviral drug. After a definitive diagnosis of CMV colitis, our patient was treated with intravenous administration of ganciclovir at a dose of 200 mg per 12 hours for 2 weeks. A follow-up colonoscopic examination showed improvement in the colonic ulcers (Fig. G) and disappearance of the CMV inclusion bodies and CMV-positive cells.

CMV enteritis in immunocompetent patients may occur in elderly patients or in those with a concomitant underlying disease. CMV colitis results in poor outcomes without the administration of antiviral treatment. Antiviral therapy is recommended for the management of immunocompetent patients. The prognosis is relatively good if the condition is promptly and correctly diagnosed and treated.6

NOTES

FINANCIAL SUPPORT: The authors received no financial support for the research, authorship, and/or publication of this article.

CONFLICT OF INTEREST: No potential conflict of interest relevant to this article was reported.

AUTHOR CONTRIBUTION: Jae Ho Park wrote the manuscript, processed the images and pathologic findings.

Hee Seok Moon selected case and reviewed the final version of the manuscript.

REFERENCES

1. Taniwaki S, Kataoka M, Tanaka H, Mizuno Y, Hirose M. Multiple ulcers of the ileum due to Cytomegalovirus infection in a patient who showed no evidence of an immunocompromised state. J Gastroenterol 1997;32:548–552.PMID: 9250906.Article PubMed
2. Canterino JE, McCormack M, Gurung A, Passarelli J, Landry ML, Golden M. Cytomegalovirus appendicitis in an immunocompetent host. J Clin Virol 2016;78:9–11.PMID: 26942831.Article PubMed
3. Dinesh BV, Selvaraju K, Kumar S, Thota S. Cytomegalovirus-induced colonic stricture presenting as acute intestinal obstruction in an immunocompetent adult. BMJ Case Rep 2013;2013:pii: bcr-2013-200944PMID: 10.1136/bcr-2013-200944.Article
4. Klauber E, Briski LE, Khatib R. Cytomegalovirus colitis in the immunocompetent host: an overview. Scand J Infect Dis 1998;30:559–564.PMID: 10225382.Article PubMed
5. Seo TH, Kim JH, Ko SY, et al. Cytomegalovirus colitis in immunocompetent patients: a clinical and endoscopic study. Hepatogastroenterology 2012;59:2137–2141.PMID: 23435132.PubMed
6. Galiatsatos P, Shrier I, Lamoureux E, Szilagyi A. Meta-analysis of outcome of cytomegalovirus colitis in immunocompetent hosts. Dig Dis Sci 2005;50:609–616.PMID: 15844689.Article PubMed

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Cytomegalovirus colitis in immunocompetent patients

Intest Res. 2018;16(3):504-505. Published online July 27, 2018

DOI: https://doi.org/10.5217/ir.2018.16.3.504

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Cytomegalovirus colitis in immunocompetent patients