Abstract
BACKGROUND: Zoon's balanitis is a benign disease characterized by an asymptomatic, chronic, solitary, shiny, red-orange plaque of the glans and/ or prepuce. In rare cases of Zoon's disease, penile squamous cell carcinoma developed in the chronic inflammatory lesions. CASE REPORT: We report on a 68-year-old male patient presenting with phimosis and coexistent Zoon's disease and penile carcinoma in situ treated successfully by circumcision. CONCLUSION: Coexistence of both lesions in contrast to the development of cancerous lesions within pre-existent Zoon's disease is a very rare observation.