Musculoskeletal
MSK Protocols
Signa GE 1.5 T LX 9.1 protocols
MR Information
MSK Procedures
Referring Providers
Thoracic Outlet Syndrome
Comments by Kavin Mistry, MD
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Bilateral cervical ribs with fusion of the right C7 rib to the right T1 rib. |
The point of fusion is better shown on this LPO projection. |
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Brachial plexus as it crosses over the union of the C7 rib and T1 rib. |
Beyond the level of osseous fusion, there is post-stenotic dilatation of the subclavian artery. |
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Coronal T1 showing the fusiform shape of the subclavian artery, likely representing post-stenotic dilatation. |
Normal caliber of the subclavian artery proximally. |
Comments:
Young woman with new
clerical position involving a lot of typing experiencing new onset of right hand
paresthesias and Raynaud type
symptoms. Clinical exam shows reproducible symptoms upon abduction of arm with
remarkable loss of ipsilateral radial pulse.
INTERESTING: Cervical ribs are found in most arterial cases but rarely in venous
and neurologic cases.
For general information about thoracic outlet syndrome, there is a recommended article in eMedicine:
http://www.emedicine.com/emerg/topic578.htm