title: Radiological findings in an unusual osteosarcoma in the maxilla.
abstract: An unusual case of osteosarcoma of the maxilla, which was initially diagnosed as fibrous dysplasia on the basis of the clinical CT and histopathological findings, is presented. However, panoramic and periapical radiography suggested a malignant neoplasm. After surgery, the tumor was diagnosed histopathologically as a low-grade osteosarcoma. We conclude that panoramic and periapical radiographs are important adjuncts and should be included in any investigation of the jaws where CT scanning is unable to differentiate between osteosarcoma and fibrous dysplasia.
authors.affiliation: Department of Radiology, Faculty of Odontology, University of São Paulo, São Paulo, Brazil.
authors.forename: M G
authors.initials: MG
authors.lastname: Cavalcanti
authors.forename: A
authors.initials: A
authors.lastname: Ruprecht
authors.forename: J
authors.initials: J
authors.lastname: Yang
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005357:Fibrous Dysplasia of Bone / Q000000981:diagnostic imaging / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D008441:Maxillary Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D012516:Osteosarcoma / Q000000981:diagnostic imaging* / Q000473:pathology; D016300:Radiography, Bitewing; D011862:Radiography, Panoramic; D014057:Tomography, X-Ray Computed