An extremely rare case of pseudomelanosis of the urinary bladder

Abstract

Pseudomelanosis (PM) is a rare, benign, condition that is characterized by deposition of melanin and/or melanin-like pigment in mucosal cells and macrophages and is best known as the entity pseudomelanosis coli.Pseudomelanosis primary of the urinary bladder has been reported only in a handful of cases worldwide. This article reports an extremely rare case of pseudomelanosis of the urinary bladder in a 79-year-old male with a history of macroscopic painless hematuria.

Keywords

• Pseudomelanosis
• Melanosis
• Pigmentation
• Melanin
• Melanin-like pigment
• Urinary bladder