title: Ossifying parotid carcinoma ex pleomorphic adenoma: CT findings.
abstract: The CT appearance of a large necrotic carcinoma ex pleomorphic adenoma of the parotid gland is described. The tumour contained trabecular bone, which was correctly identified on a preoperative CT examination and which indicated the origin of the tumour to be a benign pleomorphic adenoma. This degree of macroscopic bone formation is rare in pleomorphic adenoma, and its demonstration by CT has not been previously reported.
authors.affiliation: Regional CT Unit, Churchill Hospital, Oxford, U.K.
authors.forename: J
authors.initials: J
authors.lastname: Spencer
authors.forename: A
authors.initials: A
authors.lastname: Mason
authors.forename: K
authors.initials: K
authors.lastname: Denton
mesh_terms: D008949:Adenoma, Pleomorphic / Q000000981:diagnostic imaging*; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging; D010307:Parotid Neoplasms / Q000000981:diagnostic imaging*; D012468:Salivary Gland Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed