Discussion of Parsonage-Turner syndrome
- Parsonage-Turner syndrome (PTS) is also known as acute brachial neuritis and neuralgic amyotrophy
- Uncommon—but not rare—clinical problem.
- Although this abnormality typically has a characteristic manifestation, namely acute onset of severe shoulder pain followed shortly thereafter by weakness of at least one shoulder muscle, it is often confused clinically with more well-known disorders such as cervical spondylolysis, rotator cuff tear, shoulder impingement syndrome, and acute calcific tendonitis.
- Failure to consider PTS may result in inappropriate treatment or even unnecessary surgery.
 Imaging Findings for Parsonage-Turner syndrome
- Most typical of PTS is that of diffuse high signal intensity involving one or more muscles innervated by the brachial plexus depicted on T2-weighted images.
- T1-weighted MR images also may show atrophy of the affected muscle(s).
- The pattern of muscular involvement should match the distribution(s) of one or more peripheral nerves originating from the brachial plexus.
 See Also
 External Links
 References for Parsonage-Turner syndrome
- Cree M. Gaskin, and Clyde A. Helms. Parsonage-Turner Syndrome: MR Imaging Findings and Clinical Information of 27 Patients. Radiology 2006 240: 501-507.