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03-20-2009, 10:52 PM
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Cutaneous Horns: People With Horns
Cutaneous horns are hard, cone-shaped projections of compact keratin that grow from an underlying skin lesion. They develop later in life rather than being present at birth and occur most often in older adults, with a peak around ages 60 to 70. Common sites include sun-exposed areas such as the head, ears, hands and forearms. About half arise from benign lesions and half from premalignant or malignant lesions. Possible underlying lesions include warts, seborrhoeic keratoses, actinic keratoses and squamous cell carcinoma. Treatment involves surgical excision and microscopic examination of the tissue beneath the horn, because appearance alone cannot reliably distinguish a benign lesion from a malignant one.
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