title: Synovial osteochondromatosis in the subacromial bursa mimicking calcific tendinitis: sonographic diagnosis.
abstract: Synovial osteochondromatosis is an idiopathic benign metaplasia of the synovial membrane rarely found in an extra-articular bursa. We describe the case of a 55-year-old woman with synovial osteochondromatosis in the subacromial bursa mimicking calcific tendinitis. Plain radiographs showed a radiopaque mass over the middle facet of the greater tuberosity, suggesting calcific tendinitis. Sonography, however, showed a loose body in the subacromial bursa, and no evidence of calcification inside the rotator cuff.
authors.affiliation: Department of Orthopaedic Surgery, Teunteun Hospital, Ansan, Korea.
authors.forename: Tae-Kwon
authors.initials: TK
authors.lastname: Kim
authors.forename: Dae-Hee
authors.initials: DH
authors.lastname: Lee
authors.forename: Jong-Hoon
authors.initials: JH
authors.lastname: Park
authors.forename: Chul-Hwan
authors.initials: CH
authors.lastname: Kim
authors.forename: Woong-Kyo
authors.initials: WK
authors.lastname: Jeong
mesh_terms: D002061:Bursa, Synovial / Q000000981:diagnostic imaging* / Q000601:surgery; D002114:Calcinosis / Q000175:diagnosis; D015838:Chondromatosis, Synovial / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D017006:Rotator Cuff / Q000000981:diagnostic imaging* / Q000601:surgery; D012785:Shoulder Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D000074402:Synovectomy; D013583:Synovial Membrane / Q000000981:diagnostic imaging*; D052256:Tendinopathy / Q000175:diagnosis; D016896:Treatment Outcome; D014463:Ultrasonography
keywords: calcification; musculoskeletal ultrasonography; shoulder; synovial osteochondromatosis