Genitoanocrural porokeratosis following chronic exposure to benzene

Abstract

Porokeratoses are disorders of epidermal keratinization, the aetiology of which remains to be elucidated. We present the uncommon case of a 70-year-old man with genitoanocrural porokeratotic lesions successfully treated by CO2 laser vaporization. The patient's occupational history and the late onset, site and multiplicity of the lesions suggest their induction by benzene, a known carcinogen.