A rare case of BK cystitis in an immunocompetent patient

Document Type

Journal Article

Publication Date

5-26-2025

Journal

Pediatric nephrology (Berlin, Germany)

DOI

10.1007/s00467-025-06824-z

Keywords

BK virus; Cystitis; Hematuria

Abstract

Hemorrhagic cystitis secondary to BK virus is often seen in immunocompromised patients, but it is a rare cause of hematuria or hemorrhagic cystitis in immunocompetent children. We report a case of an otherwise healthy 4-year-old female who presented to urgent care for urinary frequency, dysuria, and gross hematuria. The initial hematuria workup, including complements, anti-nuclear antibody, anti-streptolysin O titer, and urine culture, was all negative. However, hematuria persisted for 14 days and further work up showed viral PCRs that were positive for BK virus both in blood and urine.

Department

Pediatrics

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