title: Squamous cell carcinoma in lesions of disseminated superficial actinic porokeratosis: a report of two cases.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D005260:Female; D006801:Humans; D007642:Keratosis / Q000473:pathology*; D008875:Middle Aged; D011230:Precancerous Conditions; D012878:Skin Neoplasms / Q000473:pathology*