Presentation
The patient presented with left shoulder pain and weakness. No history of trauma.
Patient Data
bulky with abnormal PDFS high signal intensity at supraspinatus, infraspinatus and to a lesser extent affecting the teres minor and deltoid muscles suggesting muscle edema
no definite solid or cystic lesions at suprascapular and spinoglenoid notches
mild fluid signal at the superior subscapularis recess
loss of normal fat signal at the subacromion/subdeltoid bursa
unremarkable glenoid labrum
Case Discussion
Parsonage-Turner syndrome (PTS) is an acute idiopathic brachial neuritis. In this case, the denervation edema affecting muscles of the shoulder girdle without a clear cause (e.g. ganglion/paralabral cyst, solid focal lesions, history of trauma) highly suggests PTS.
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