BK virus encephalitis in an immunocompetent patient |
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Authors: | R Voltz G J?ger K Seelos L Fuhry R Hohlfeld |
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Affiliation: | Department of Neurology, Klinikum Grosshadern, Munich, Germany. |
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Abstract: | OBJECTIVES: To describe a previously healthy patient now suffering from monophasic encephalitis caused by a primary infection with BK virus and to discuss possible risk factors for developing BK virus encephalitis. DESIGN: Case report. SETTING: Referral hospital. PATIENT: The patient was examined on referral. MAIN OUTCOME MEASURES: The main diagnostic tests performed were serology, polymerase chain reaction on cerebrospinal fluid samples, and cranial magnetic resonance imaging. RESULTS: During the course of the patient's encephalitis, an IgM titer developed against polyomavirus, followed by anti-polyomavirus IgG. Wild-type BK virus was demonstrated in cerebrospinal fluid samples. Cranial magnetic resonance imaging showed diffuse reversible white matter changes most prominent on T2-weighted images. CONCLUSION: We conclude that diagnostic tests for BK, a human polyomavirus, should be included in the screening program for encephalitogenic pathogens. |
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