Cutaneous Horn

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Cutaneous Horn

Overview:

A cutaneous horn, also known as cornu cutaneum, refers to a specific appearance of a skin lesion in which a cone-shaped protuberance arises on the skin caused by overgrowth of the most superficial layer of skin (epidermis). A cutaneous horn is not a particular lesion but is a reaction pattern of the skin. Approximately 40% of cutaneous horns represent precancerous lesions called actinic keratoses. Cutaneous horns may also overlie skin cancer. When overlying cancerous skin, squamous cell carcinoma is typically at the base of the cutaneous horn, but basal cell carcinoma is also possible.

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