Melanosis of the urinary bladder with associated urinary tract infection

Lauren Nesi; Jordan Sarver; Paramjot Gogia; Ali Baydoun; Barrett Anderson; Dongping Shi; Mazen Abdelhady

doi:10.1016/j.eucr.2025.102954

Melanosis of the urinary bladder with associated urinary tract infection

Urol Case Rep. 2025 Jan 16:59:102954. doi: 10.1016/j.eucr.2025.102954. eCollection 2025 Mar.

Authors

Lauren Nesi¹, Jordan Sarver¹, Paramjot Gogia^{1

2}, Ali Baydoun¹, Barrett Anderson¹, Dongping Shi³, Mazen Abdelhady¹

Affiliations

¹ Department of Urology, Detroit Medical Center, Detroit, MI, USA.
² Department of Health Sciences, Brock University, St. Catharines, ON, Canada.
³ Department of Pathology and Laboratory Services, Detroit Medical Center, Detroit, MI, USA.

Abstract

Melanosis of the bladder is an exceedingly rare benign condition that can mimic more serious urothelial pathologies. Here, we analyze the clinical presentation, associated symptomatology, and follow-up of a patient presenting with melanosis and associated urinary tract infection. This patient is a 72-year-old male undergoing workup for gross hematuria, lower urinary tract symptoms, and recurrent urinary infections. We subsequently discuss two additional incidental findings of melanosis and associated urinary tract infection at our institution, and introduce novel context for this condition that currently lacks a standardized management protocol. To our knowledge, this is the first case series on melanosis vesicae.

Keywords: Aerococcus; Benign bladder finding; Histopathology; Melanosis vesicae; UTI.

Publication types

Case Reports