Giant actinic porokeratosis of the scalp.
D000368:Aged; D017679:Cryotherapy / Q000379:methods; D006801:Humans; D008297:Male; D017499:Porokeratosis / Q000473:pathology* / Q000628:therapy; D012536:Scalp Dermatoses / Q000473:pathology* / Q000628:therapy