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Case Reports
. 2023 May 10;15(5):e38850.
doi: 10.7759/cureus.38850. eCollection 2023 May.

Thrombocytopenia in Anti-neutrophil Cytoplasmic Antibody-Associated Vasculitis Indicating the Presence of Cytomegalovirus Infection: A Case Report

Ryuichi Ohta  1 , Yumi Naito  1 , Nozomi Nishikura  1 , Keita Inoue  2 , Chiaki Sano  3
Affiliations
Case Reports

Thrombocytopenia in Anti-neutrophil Cytoplasmic Antibody-Associated Vasculitis Indicating the Presence of Cytomegalovirus Infection: A Case Report

Ryuichi Ohta et al. Cureus. .

Abstract

Although cytomegalovirus (CMV) usually colonizes the human body without causing symptoms, CMV infections often develop in immunocompromised hosts. Immunosuppression can trigger CMV infection, and its prediction is essential; however, this is challenging without specific criteria. We present the case of an 87-year-old male patient who visited a rural community hospital with the chief complaint of persistent cough, productive of bloody sputum. Initially, the patient developed thrombocytopenia without any abnormalities of liver function; however, a positive myeloperoxidase antineutrophil cytoplasmic antibody (ANCA) test and the presence of alveolar hemorrhage and glomerulonephritis confirmed ANCA-associated vasculitis. The patient's symptoms and thrombocytopenia resolved transiently after treatment with prednisolone and rituximab. However, the recurrence of thrombocytopenia and the appearance of urinary intracytoplasmic inclusion bodies during the treatment course were investigated using an antigenemia test, which ultimately confirmed CMV viremia. Valganciclovir treatment resolved all the symptoms. This case report showed that thrombocytopenia might indicate the presence of CMV infection in ANCA-associated vasculitis and that intracytoplasmic inclusion bodies in immunosuppressed patients require investigation of CMV infection for effective treatment.

Keywords: anti-neutrophil cytoplasmic antibody; cytomegalovirus infection; general medicine; intracytoplasmic inclusion body; japan; older patients; rural hospital; thrombocytopenia.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1
Figure 1. Computed tomography of the chest showing multiple lesions of ground-glass opacities on bilateral lungs showing alveolar hemorrhage (white arrow)
Figure 2
Figure 2. The urinalysis showing multiple intracytoplasmic inclusion bodies/high power fields (block arrows)
See this image and copyright information in PMC

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