Keratosis lichenoid actinic L57.0

Variant of keratosis actinica: Occurring in sun-exposed areas, usually solitary, hyperkeratotic, reddish-brownish, macroscopically uncharacteristic flat papule with the histologic aspects of interface dermatitis.

S.a. Keratosis actinica. Pronounced interface dermatits. In addition, the phenomena of actinic keratosis with disordered epithelial structure, focal parakeratosis, and polymorphous keratinocytes are found on light-damaged skin.

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