Seborrheic keratosis, dermatoscope image

Seborrheic keratosis, dermatoscope image


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Seborrheic keratosis. Dermatoscope image of a seborrheic keratosis (seborrheic or senile wart) on the leg of a 60-year-old male patient. This skin growth is caused by over-production of keratin, the tough fibrous protein found in hair and the outer layer of skin. Keratoses range from flat, dark brown rough patches to small, wart-like protrusions covered with a greasy, removable crust. Seborrheic keratoses are mainly found on the trunk and usually occur in elderly patients. They are harmless, but as they are unsightly can be removed by cryosurgery (destruction of tissue using extreme cold) or surgical excision.

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