Keratoacanthoma:

Keratoacanthomas are rapidly growing, red (erythematous), dome shaped bumps (papules/nodules) with central craters. Occasionally, these will disappear spontaneously (involute). Often, they are treated to avoid further involvement or destruction of underlying tissue. They are of concern because of the similarity to squamous cell cancer.
- Reviewed last on: 1/22/2008
- Michael Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.