Abstract
Zoon's plasma cell balanitis (PCB) or balanitis circumscripta plasma cellularis is a disease of middle-age to elderly men. It presents as a solitary, smooth, shiny, red to orange plaque of the glans penis with a mirrored or “kissing” lesion on the mucosal surface of the foreskin.1 Tan-brown macules may be seen within the smooth plaque. Its etiology remains unknown. PCB may result from irritation or mild trauma affecting keratinized skin in a moist environment.2 However, some investigators suggest that PCB is a nonspecific inflammatory reactive pattern that may occur as an isolated finding or complicate other affections of the glans penis or foreskin in uncircumcised men.
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