Spreading pigmented actinic keratoses.
The clinical and histological features of ten pigmented keratoses arising on the face are described. They were all greater than 1.5 cm in diameter and had been spreading centrifugally. They were variably pigmented and possessed either a smooth, verrucous or slightly scaly surface. Two lesions had progressed to become pigmented squamous cell carcinomas.
D000368:Aged; D005148:Facial Dermatoses / Q000473:pathology; D005260:Female; D006801:Humans; D007642:Keratosis / Q000209:etiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012867:Skin / Q000473:pathology; D012880:Skin Pigmentation; D013472:Sunlight