title: Pilomatrixoma: a rare condition in the differential diagnosis of a parotid swelling.
abstract: Pilomatrixoma is an uncommon tumour arising from hair follicles. It is more common in the hair bearing areas of the upper region of the body, but is relatively rare. A case is presented in which clinical examination, ultrasound and computed tomography suggested the presence of a pleomorphic adenoma arising from the superficial lobe of the parotid gland, but at operation the mass was found to be separate from it and subsequent histological examination revealed a pilomatrixoma.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Queen Elizabeth Military Hospital, London.
authors.forename: M D
authors.initials: MD
authors.lastname: Williams
authors.forename: M H
authors.initials: MH
authors.lastname: Pearson
authors.forename: F D
authors.initials: FD
authors.lastname: Thomas
mesh_terms: D008949:Adenoma, Pleomorphic / Q000473:pathology; D000328:Adult; D003937:Diagnosis, Differential; D005153:Facial Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D010307:Parotid Neoplasms / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*