title: Cemento-ossifying fibroma presenting as a mass of the parapharyngeal and masticator space.
abstract: We report a case of cemento-ossifying fibroma that presented as a large extraosseous mass in the masticator and parapharyngeal space. CT scanning and MR imaging showed a large extraosseous mass with central conglomerated, well-matured ossified nodules and fatty marrow. The central matured ossified nodules were of low density on CT scans and high signal intensity on T1- and T2-weighted MR images. Multiplanar reformatted CT scans revealed the origin of the mass to be at the extraction site of the right lower second molar tooth.
authors.affiliation: Department of Radiology, The Catholic University of Korea, Suwon, Kyunggi-do, Korea (south).
authors.forename: S L
authors.initials: SL
authors.lastname: Jung
authors.forename: K H
authors.initials: KH
authors.lastname: Choi
authors.forename: Y H
authors.initials: YH
authors.lastname: Park
authors.forename: H C
authors.initials: HC
authors.lastname: Song
authors.forename: M S
authors.initials: MS
authors.lastname: Kwon
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D018214:Fibroma, Ossifying / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008339:Mandibular Neoplasms / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D008963:Molar / Q000473:pathology; D009808:Odontogenic Tumors / Q000175:diagnosis* / Q000473:pathology; D010610:Pharyngeal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014057:Tomography, X-Ray Computed; D014081:Tooth Extraction