Parsonage Turner Syndrome is a brachial neuritis that can cause denervation of muscles around the shoulder joint.
WHAT TO LOOK FOR ON MRI
- Denervation ( acute or chronic) of Supraspinatus and Infraspinatus
- NO mass in region of suprascapular nerve
Image Above: Denervation of supraspinatus ( Orange arrow) and infraspinatus ( Pink arrow). Increased signal on PDFS on keeping with acute denervation. No mass present in supra scapular region or compression of suprascapular nerve seen.
OTHER MUSCLES INVOLVED
- Most commonly we see only Supraspinatus and Infraspinatus involved
- But can get other muscles around the shoulder affects as well
- Deltoid/ Subscapularis/ Teres Minor
- See table below.
Image Above: Most common muscles involved in Parsonage Turner Syndrome are Supraspinatus and Infraspinatus. But there can also be involvement of deltoid, teres minor and subscapularis less commonly. From AJR 2007 189: W39-W44 Richard Scalfe et al.
Tab #1
Tab #2
Tab #1
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Tab #2
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