We report 16 cases of trichilemmal pilar tumors. All of the patients were women of older ages. These unusual tumors are located chiefly on the scalp and consists of areas of squamous epithelium with non-epidermal keratinization and moderate cellular polymorphism. The origin of the tumor appears to be the outer root sheath of hair. Two of our cases were cystic. In order to avoid an erroneous diagnosis of squamous cell carcinoma, an adequate knowledge of these tumors is necessary.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.