title: Synovial sarcomas of the head and neck: MR findings.
abstract: OBJECTIVE
  MR images of six synovial sarcomas of the head and neck were evaluated to determine their characteristic sites of origin, size, extent, intensity, and contrast enhancement. It was hoped that specific MR characteristics could be defined to suggest this entity.
  
  
  CONCLUSIONS
  A nonmucosal head and neck mass that is isointense to gray matter on T1-weighted images and is well defined yet heterogeneous, with septations, hemorrhage, cysts, calcification, or multilocularity, should raise suspicion of a synovial sarcoma. Because the appearance of synovial sarcomas varies and other masses may appear similar, no specific imaging characteristics define the entity.
authors.affiliation: Department of Radiology, University of Pennsylvania Medical Center, Philadelphia 19104-4283, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Hirsch
authors.forename: D M
authors.initials: DM
authors.lastname: Yousem
authors.forename: L A
authors.initials: LA
authors.lastname: Loevner
authors.forename: K T
authors.initials: KT
authors.lastname: Montone
authors.forename: A A
authors.initials: AA
authors.lastname: Chalian
authors.forename: R E
authors.initials: RE
authors.lastname: Hayden
authors.forename: G S
authors.initials: GS
authors.lastname: Weinstein
mesh_terms: D000328:Adult; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013584:Sarcoma, Synovial / Q000175:diagnosis*