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Hemorrhagic Cystitis With Bladder Tamponade Associated With Morganella morganii in an Older Patient Without Recent Catheterization

Kawaguchi Y

IJU case reports, 2026

Abstract

Introduction: Morganella morganii is an uncommon cause of urinary tract infection, typically associated with catheterization or underlying diseases.

Case presentation: I report a rare case of severe hemorrhagic cystitis with massive intravesical clot retention in a 90-year-old woman without recent catheterization or diabetes mellitus. Ultrasonography revealed a large intravesical hematoma requiring clot evacuation. Urine culture yielded M. morganii as the sole organism. The patient improved following antimicrobial therapy and supportive management.

Conclusion: This case suggests that M. morganii-associated urinary tract infection may present with severe hemorrhagic cystitis even in the absence of catheterization. Although the underlying mechanism remains uncertain, urease-mediated mucosal injury may have contributed to the clinical presentation.

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