title: [Hyperechoic rotator cuff tendon tear].
abstract: OBJECTIVE
  To describe unusual rotator cuff tendon tears which are hyperechoic at ultrasonography (US).
  
  
  METHODS
  We retrospectively reviewed the shoulder US examinations of 100 patients with rotator cuff tear demonstrated by CT arthrogram with bursography. We included in this study hyperechoic foci without surrounding hypoechoic zone. A second US examination was performed after bursal distension.
  
  
  RESULTS
  Six (6%) hyperechoic foci were detected. The initial US diagnosis was tendinosis in five cases (n=5) and full thickness tear in one case (n=1). At repeat US examination, the hyperechoic area was completely or partially hypoechoic, probably because the tears were filled with the injected hypoechoic fluid.
  
  
  CONCLUSIONS
  Some rotator cuff tears, filled with fibrinoid fragments, are probably underdiagnosed at US.
authors.affiliation: Service de Radiologie B, CHU Cochin, 27 rue du Fg St-Jacques, 27 rue du faubourg Saint-Jacques, 75014 Paris.
authors.forename: M
authors.initials: M
authors.lastname: Fermand
authors.forename: C
authors.initials: C
authors.lastname: Sihassen
authors.forename: D
authors.initials: D
authors.lastname: Mauget
authors.forename: L
authors.initials: L
authors.lastname: Sarazin
authors.forename: A
authors.initials: A
authors.lastname: Chevrot
authors.forename: J L
authors.initials: JL
authors.lastname: Drapé
mesh_terms: D000328:Adult; D001175:Arthrography; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017006:Rotator Cuff / Q000000981:diagnostic imaging*; D000070636:Rotator Cuff Injuries; D012785:Shoulder Joint / Q000000981:diagnostic imaging; D013708:Tendon Injuries / Q000000981:diagnostic imaging*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography