title: Synovial sarcoma arising from the chest wall: MR imaging findings.
abstract: We report a case of synovial sarcoma of the chest wall in a 41-year-old man. Chest CT revealed a huge tumor of the left chest wall with heterogeneous enhancement. On MR imaging, the tumor showed the "bowl-of-fruit" mixed-signal appearance with fluid-fluid levels similar to those of synovial sarcoma of the extremities. Synovial sarcoma arising from the chest wall is extremely rare; only four cases have been reported in the English literature. As synovial sarcoma is considered a carcinosarcoma-like tumor with true epithelial differentiation, it is able to originate from various regions. Even if the tumor is found in a region distant from the synovial membrane, the differential diagnosis of a tumor which demonstrates such findings on MR imaging should include synovial sarcoma.
authors.affiliation: Department of Radiology, Kurume University School of Medicine, Fukuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Fujimoto
authors.forename: S
authors.initials: S
authors.lastname: Hashimoto
authors.forename: T
authors.initials: T
authors.lastname: Abe
authors.forename: S
authors.initials: S
authors.lastname: Meno
authors.forename: H
authors.initials: H
authors.lastname: Terasaki
authors.forename: H
authors.initials: H
authors.lastname: Nishimura
authors.forename: N
authors.initials: N
authors.lastname: Hayabuchi
mesh_terms: D000328:Adult; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013584:Sarcoma, Synovial / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology; D013899:Thoracic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed