A case of disseminated superficial actinic porokeratosis subsequent to renal transplantation.

Disseminated superficial actinic porokeratosis is characterized by the development of numerous annular keratotic lesions on sun-exposed areas, accompanied by pathological evidence of cornoid lamellae. We examined a case of disseminated superficial actinic porokeratosis in a 40-year-old male who had undergone renal transplantation and was being treated with immunosuppressants. Five years after surgery, he began to develop numerous eruptions. Some of these eruptions enlarged and developed over a second period of five years until he finally required hospitalization.