Actinic keratosis

Definition: A precancerous lesion of the skin composed of atypical keratinocytes. It is characterized by the presence of thick, scaly patches of skin. Several histologic variants have been described, including atrophic, acantholytic, and hyperkeratotic variants.

Synonyms (terms occurring on more labels are shown first): actinic keratosis, actinic keratoses, actinic or solar keratoses, solar keratosis

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