Age / Sex : 66 / M

Age / Sex : M/66

Chief complaint : Rt. Shoulder pain (1MA)

Parsonage-Turner syndrome

Discussion

Findings: Rt.
Brachial plexus swelling and Rt. supraspinatus and
infraspinatus muscle, swelling and enhancement,

Differential Diagnosis: suprascapular nerve entrapment

Diagnosis:
 Parsonage-Turner syndrome

Discussion:

Parsonage-Turner syndrome = acute idiopathic brachial
neuritis

1>   Sx. : sudden
onset of shoulder pain or weakness of the shoulder girdle musculature

2>   prevalence :
1.64/100000 people

             male> female

             unilateral > bilateral
(1/3)

3>   cause: viral
and autoimmune process are suggested.

4>   Dx.: MR and
EMG

:EMG: acute denervation in the
brachial plexus distribution

 MR finding:

       - brachial plexus swelling

       - denervation of shoulder girdle
and chest wall including supraspinatus and infraspinatus muscles (most common),
deltoid, teres minor, subscapularis, latissimus dorsi, pectoralis

References: MRI Findings of 26 Patients with Parsonage-Turner Syndrome AJR 2007;
189:W39-W44