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Noncancerous, Precancerous and Cancerous Tumors

Picture of Cutaneous Horns

Picture of 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). The size and shape of the growth can vary considerably, but most are a few millimeters in length. Squamous cell carcinoma is often found at the base. It usually occurs in fair-skinned elderly adults with a history of significant sun exposure.

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Text: WebMD Health Tool: "Precancerous Skin Lesions and Skin Cancer Picture Slideshow"