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a premalignant warty lesion occurring on the sun-exposed skin of the face or hands in aged light-skinned persons; hyperkeratosis may form a cutaneous horn, and squamous cell carcinoma of low-grade malignancy may develop in a small proportion of untreated patients.
See basal cell papilloma.
verruca plana senilis(1) Seborrhoeic keratosis, see there.
(2) Actinic keratosis, see there.