title: Pigmented villonodular synovitis: MRI characteristics.
abstract: The magnetic resonance imaging (MRI) scans of 26 patients with histopathologically proven pigmented villonodular synovitis (PVNS), involving joints but excluding tendon sheaths, were reviewed retrospectively. The purpose of this study is to define the spectrum and frequency of MRI characteristics for PVNS using conventional spin echo (in two cases before and after intravenous administration of gadopentate dimeglumine) and also gradient echo techniques. A cystic variety is presented, the MRI appearances of which have not been found in a review of the literature.
authors.affiliation: Department of Radiology, University of California, San Diego, USA.
authors.forename: T H
authors.initials: TH
authors.lastname: Hughes
authors.forename: D J
authors.initials: DJ
authors.lastname: Sartoris
authors.forename: M E
authors.initials: ME
authors.lastname: Schweitzer
authors.forename: D L
authors.initials: DL
authors.lastname: Resnick
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002358:Cartilage, Articular / Q000473:pathology; D003287:Contrast Media; D003560:Cysts / Q000473:pathology; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006621:Hip Joint / Q000473:pathology; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007719:Knee Joint / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000473:pathology; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D012189:Retrospective Studies; D013582:Synovial Fluid; D013583:Synovial Membrane / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis*
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA