Introduction: The incidence of basal cell carcinoma in the population younger than 40 years is rising, and a majority of basal cell carcinomas occur on the head and neck. Our objective was to determine whether basal cell carcinomas in the population younger than 40 years occur more frequently at the forehead and its subunits (forehead proper, temple, suprabrow, and glabella).
Methods: We performed a retrospective case review of 4,337 basal cell carcinomas in 3,223 patients treated with Mohs micrographic surgery.