Trichilemmal cysts constitute the second most common cutaneous cysts and are mostly presented on the scalp of middle aged women. It is, therefore, unusual for a young person to have a trichilemmal cyst and it is extremely rare for a trichilemmal cyst to be ossified. In literature, only 8 cases of trichilemmal cysts with concomitant ossification have been described. We report the case of a 22 year old female who presented with a scalp nodule and was treated via surgical excision of the lesion. The pathology examination of the surgical specimen revealed a lesion consisting of a multilayered squamous epithelium of slightly eosinophilic maturing keratinocytes. There was no granular layer, whereas the core of the lesion was occupied by mature bone tissue with calcium deposits. The definite diagnosis of the pathology report was ossifying trichilemmal cyst. The aim of this report is, to enlighten clinicians about this rare pathological entity.
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.