title: Juxta-articular synovial cyst of the shoulder.
abstract: A case of an unusual synovial cyst with both intra- and extraosseous components found in the proximal humerus of a patient with osteoarthritis is presented. The importance of this lesion is that it should be recognized as a manifestation of the underlying osteoarthritis and does not represent a more serious primary lesion.
authors.affiliation: Uniformed Services University, Department of Orthopaedic Surgery, United States Air Force Academy Hospital/SGHST, Colorado, USA.
authors.forename: M D
authors.initials: MD
authors.lastname: Miller
authors.forename: P A
authors.initials: PA
authors.lastname: Mcmahon
authors.forename: J
authors.initials: J
authors.lastname: Port
authors.forename: J J
authors.initials: JJ
authors.lastname: Warner
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D010003:Osteoarthritis / Q000150:complications*; D012785:Shoulder Joint; D013581:Synovial Cyst / Q000175:diagnosis / Q000209:etiology*