Disseminated superficial actinic porokeratosis is the most common form ofporokeratosis, associated with prolonged sun exposure and a low risk of malignant transformation. Clinically, the lesions are described as annular papules and plaques, with a well demarcated, hyperkeratotic and elevated margin, histologically corresponding to cornoid lamella.
We report a case of disseminated superficial actinic porokeratosis in a 58-year-old patient, with a history of moderate sun-exposure. The diagnosis was sustained by clinical appearance, dermoscopy, gentian violet examinationand it was histologically confirmed. At 6 months follow-up, there was no evidence of malignant transformation.