Etymed

actinic keratosis

actin ic kerat osis

Definition

A precancerous skin condition characterized by rough, scaly patches on sun-damaged skin

Clinical context

A 65-year-old man presents with a 2-month history of a rough, scaly patch on his right forearm that he noticed while shaving. He works as a construction worker and has extensive sun exposure history. On examination, there is a 1.5 cm hyperkeratotic lesion with erythematous base. A biopsy confirms actinic keratosis with atypia.

Mnemonic

AK = Actinic Keratosis: 'A' for Atypia, 'K' for Keratosis, 'S' for Scaly patches

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