Keratoacanthomas are thought to be a type of squamous cell skin cancer. They typically have a crater-like appearance with a slightly elevated lesion and a thick crust. Keratoacanthomas often have a thick layer of scale. Typical to keratoacanthomas, this lesion is red and inflamed at the base. This image displays a cup-like shape with a thick "plug" of scaly skin typical of keratoacanthomas. This image displays a keratoacanthoma on an elbow. This image displays a close-up of a keratoacanthoma. This image displays a keratoacanthoma, a form of skin cancer, that needs a biopsy by a dermatologist and full removal. A keratoacanthoma appears on sun-damaged skin and typically has a red, firm base and central crust-like “plug.” This image displays a typical keratoacanthoma in front of the top of the ear. This image displays a lesion with a thick, scaly crust typical of keratoacanthoma. This image displays a keratoacanthoma on the lip. This image displays a keratoacanthoma.
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Keratoacanthoma:
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Picture of Keratoacanthoma: Keratoacanthomas are thought to be a type of squamous cell skin cancer. They typically have a crater-like appearance with a slightly elevated lesion and a thick crust. Divider line
Keratoacanthomas are thought to be a type of squamous cell skin cancer. They typically have a crater-like appearance with a slightly elevated lesion and a thick crust.
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Overview
Keratoacanthoma (KA) is a rapidly growing skin cancer usually appearing as a volcano-like bump on the sun-exposed skin of middle-aged and elderly individuals. Many scientists consider keratoacanthoma to be a less serious form of squamous cell carcinoma. Most keratoacanthoma cause only minimal skin destruction, but a few behave more aggressively and can spread to lymph nodes.
Last Modified: 29 Jan 2008

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