I have a rapidly growing lesion that won't heal. What is it?
A keratoacanthoma, or a KA, is a lesion that contains keratin. It may look like a red or pink volcano growing on the skin. A KA is considered a form of squamous cell carcinoma. Some KA's are considered non-malignant and will resolve, usually within two or three months. KA's that continue to grow and spread, should be treated aggressively as a squamous cell carcinoma. If your lesion does not resolve, it will need to be treated surgically or with topical chemicals.