title: Recurrent temporal bone tenosynovial giant cell tumor with chondroid metaplasia: the use of imaging to assess recurrence.
abstract: Tenosynovial giant cell tumor (TGCT) is a benign proliferative lesion of unclear etiology. It is predominantly monoarticular and involves the synovium of the joint, tendon sheath, and bursa. TGCT of the temporomandibular joint (TMJ) is rare and aggressive resulting in destruction of surrounding structures. The diagnosis may be suggested by imaging, mainly by the MR features and PET/CT, and confirmed by histopathology. We describe the case of a 50-year-old man who presented with right-sided hearing loss, tinnitus and TMJ pain. Pathology revealed tenosynovial giant cell tumor with chondroid metaplasia. Six years later he developed a recurrence, which was documented to our knowledge for the first time with CT, MR and FDG PET/CT imaging.
authors.affiliation: Department of Neuroradiology, Hospital Santo António - CHP; Porto, Portugal - sofiapina@mail.com.
authors.forename: Sofia
authors.initials: S
authors.lastname: Pina
authors.affiliation: Department of Radiology, Virgen de la Salud Hospital; Toledo, Spain.
authors.forename: Maria
authors.initials: M
authors.lastname: Fernandez
authors.affiliation: Department of Radiology, Valencia Clinical University Hospital; Valencia, Spain.
authors.forename: Silvia
authors.initials: S
authors.lastname: Maya
authors.affiliation: Department of Pathology, The Icahn School of Medicine at Mount Sinai; New York, USA.
authors.forename: Roberto A
authors.initials: RA
authors.lastname: Garcia
authors.affiliation: Department of Radiology, The Icahn School of Medicine at Mount Sinai; New York, USA.
authors.forename: Ali
authors.initials: A
authors.lastname: Noor
authors.affiliation: Department of Radiology, The Icahn School of Medicine at Mount Sinai; New York, USA.
authors.forename: Puneet S
authors.initials: PS
authors.lastname: Pawha
authors.affiliation: Department of Radiology, The Icahn School of Medicine at Mount Sinai; New York, USA.
authors.forename: Peter M
authors.initials: PM
authors.lastname: Som
mesh_terms: D002356:Cartilage / Q000000981:diagnostic imaging / Q000473:pathology*; D019788:Fluorodeoxyglucose F18; D018212:Giant Cell Tumor of Bone / Q000175:diagnosis* / Q000473:pathology; D034381:Hearing Loss / Q000209:etiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008679:Metaplasia / Q000175:diagnosis; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis; D059906:Neuroimaging / Q000379:methods*; D049268:Positron-Emission Tomography / Q000379:methods; D019275:Radiopharmaceuticals; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013701:Temporal Bone / Q000000981:diagnostic imaging / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000209:etiology; D014012:Tinnitus / Q000209:etiology; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18
keywords: CT; MR; PET; temporal bone; tenosynovial giant cell tumor