Paralabral cyst: an unusual cause of quadrilateral space syndrome

Arthroscopy. 1999 Sep;15(6):632-7. doi: 10.1053/ar.1999.v15.015063.


A paralabral cyst arising from a detached inferior glenoid labral tear was shown by magnetic resonance imaging (MRI) to dissect into the quadrilateral space, resulting in a compressive neuropathy of the axillary nerve. Three consecutive MRI examinations were performed over a 5-year period in a 47-year-old man with a long history of worsening shoulder pain. The MRI examinations revealed a slowly enlarging paralabral cyst extending into the quadrilateral space with progressive atrophy of the teres minor muscle.

Publication types

  • Case Reports

MeSH terms

  • Axilla / innervation*
  • Brachial Plexus* / pathology
  • Cartilage, Articular / injuries*
  • Cartilage, Articular / pathology
  • Cartilage, Articular / surgery
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Middle Aged
  • Nerve Compression Syndromes / diagnosis
  • Nerve Compression Syndromes / etiology*
  • Nerve Compression Syndromes / surgery
  • Orthopedic Procedures
  • Rupture
  • Shoulder Injuries*
  • Shoulder Joint / pathology
  • Shoulder Joint / surgery
  • Synovial Cyst / complications*
  • Synovial Cyst / diagnosis
  • Synovial Cyst / surgery