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Precancerous Skin Lesions and Skin Cancer

Close-up of actinic cheilitis on lower lip
3/23

Actinic Cheilitis (Farmer’s Lip)

Related to actinic keratosis, actinic cheilitis is a precancerous condition that usually appears on the lower lips. Scaly patches or persistent roughness of the lips may be present. Less common symptoms include swelling of the lip, loss of the sharp border between the lip and skin, and prominent lip lines. Actinic cheilitis may evolve into invasive squamous cell carcinoma if not treated.

Close-up of cutaneous horn on scalp of elderly man
4/23

Cutaneous Horns

The cutaneous horn appears as a funnel-shaped growth that extends from a red base on the skin. It is composed of compacted keratin (the same protein in nails). It is a specialized type of actininc keratosis. The size and shape of the growth can vary considerably, but most are a few millimeters in length. Squamous cell carcinoma can be found at the base. It usually occurs in fair-skinned elderly adults with a history of significant sun exposure.

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