Squamous cell carcinomas in relation to cyclosporin therapy of non malignant skin disorders.

Two patients with psoriasis and one with pityriasis rubra pilaris developed squamous cell carcinomas in relation to cyclosporin A therapy. Dermatological patients previously treated with ultraviolet radiation and other kinds of immunosuppressive therapy may represent a special risk group with respect to cyclosporin. A related malignancies.