title: Primary synovial sarcoma of the sternum: computed tomography and magnetic resonance imaging findings.
abstract: We report the computed tomography (CT) and magnetic resonance imaging (MRI) findings of a rare case of synovial sarcoma of the sternum in an 86-year-old man. CT demonstrated an inhomogenously enhanced soft-tissue-density mass of the sternum that destroyed bone cortex and protruded anteriorly. On MRI, the tumor showed a multinodular mass with internal septation and heterogeneous enhancement. These CT and MRI findings were nonspecific, but were similar to those of soft tissue synovial sarcomas. The tumor was more clearly demarcated by MRI than CT. This is the first report concerning the CT and MRI findings of synovial sarcoma of the sternum. Synovial sarcoma should be added to the gamut of primary malignant neoplasms of the sternum.
authors.affiliation: Department of Radiology, Imakiire General Hospital.
authors.forename: Masatoyo
authors.initials: M
authors.lastname: Nakajo
authors.forename: Kouichi
authors.initials: K
authors.lastname: Ohkubo
authors.forename: Tooru
authors.initials: T
authors.lastname: Nandate
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shirahama
authors.forename: Masakazu
authors.initials: M
authors.lastname: Yanagi
authors.forename: Masaki
authors.initials: M
authors.lastname: Anraku
authors.forename: Masayuki
authors.initials: M
authors.lastname: Nakajo
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013584:Sarcoma, Synovial / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013249:Sternum / Q000473:pathology*; D014057:Tomography, X-Ray Computed