Penile granuloma annulare: An uncommon entity

Abstract

Granuloma annulare (GA) is a benign inflammatory disorder of unknown etiology, histologically characterized by dermal palisading granulomas with central degeneration of collagen. Involvement of the penis is exceptional and lesions restricted only to the glans penis are rarely reported. We report a middle-aged male, presenting with asymptomatic plaques on the glans penis which on biopsy proved to be interstitial GAs. Penile GA seldom shows spontaneous resolution as in our case. Penile GA although rare should be considered in the differential diagnosis of granulomatous lesions of the penis and histological examination is crucial for its diagnosis to avoid over-treatment.