title: Synovial cyst as differential diagnosis of supraclavicular mass in rheumatoid arthritis.
abstract: We describe a mass located at the supraclavicular space in a patient with a 5 year history of erosive rheumatoid arthritis. The mass was initially diagnosed as a suspected metastasis, but direct puncture and magnetic resonance imaging revealed a cyst. Clinical and radiological characteristics are described and pathogenesis and treatment are discussed.
authors.affiliation: Rheumatology Unit, Hospital Txagorritxu, Osakidetza, Vitoria, País Vasco, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Cuende
authors.forename: J C
authors.initials: JC
authors.lastname: Vesga
authors.forename: E
authors.initials: E
authors.lastname: Barrenengoa
authors.forename: G
authors.initials: G
authors.lastname: Galdos
authors.forename: M
authors.initials: M
authors.lastname: Gómez
authors.forename: A
authors.initials: A
authors.lastname: Merino
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications*; D002968:Clavicle / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D011859:Radiography; D013581:Synovial Cyst / Q000150:complications / Q000000981:diagnostic imaging*