title: A benign soft tissue mass simulating a glenoid labral cyst on unenhanced magnetic resonance imaging.
abstract: A 72-year-old Caucasian man initially presented with a vibratory sensation progressing to pain in his left scapular region. After failed conservative therapy, a left shoulder unenhanced magnetic resonance (MR) imaging study was performed. Initial interpretation suggested a glenoid labral tear with an associated paralabral cyst. Further review of the images identified heterogeneous increased T2-weighted signal intensity, which led to repeat MR imaging with intravenous contrast and the diagnosis of a solid tumor in the suprascapular notch. The MR appearance of the mass is illustrated and the usefulness of intravenous contrast administration in differentiating between a solid and cystic mass on MR imaging is discussed.
authors.affiliation: Department of Radiology, Wilford Hall Medical Center, 759 MDTS/MTRD, 2200 Bergquist Drive, Suite 1, Lackland AFB, TX 78236-5300, USA.
authors.forename: Paul M
authors.initials: PM
authors.lastname: Sherman
authors.forename: Timothy G
authors.initials: TG
authors.lastname: Sanders
authors.forename: David R
authors.initials: DR
authors.lastname: De Lone
mesh_terms: D000368:Aged; D001845:Bone Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D007593:Joint Instability / Q000473:pathology; D008023:Ligaments, Articular / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D009369:Neoplasms / Q000175:diagnosis*; D012421:Rupture / Q000150:complications; D012785:Shoulder Joint / Q000503:physiopathology*; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*; D013581:Synovial Cyst / Q000175:diagnosis* / Q000209:etiology