BACKGROUND: Actinic keratoses occasionally progress to invasive skin cancer. The
clinician-dermatologist ideally would like to know which lesions are at individual risk.
Various investigators have attempted to answer this problem through a variety of clinical
research applications including counting individual lesions in populations at risk, in the
general population, and by examining insurance claims data and extrapolating incidence
figures. OBJECTIVE: The purpose of the study was to ascertain the range of risks for …