1. Thoracic Outlet Syndrome
• Thoracic Outlet
Syndrome(TOS) results
from neurovascular
compression at the
superior thoracic outlet
• Compression of brachial
plexus, subclavian artery,
and/or subclavian vein
• Points of compression at
the costoclavicular
junction, scalene triangle,
and pectoralis minor
tendon

2. High Grade Stenoses(Significant)

3. Patients Temporarily Benefit from IJ
Ballooning

4. Conclusions
• Internal Jugular
Stenosis is common in
TOS patients
• Subclavian and
Internal Jugular
Stenosis are not
dependent
• Internal Jugular
Stenosis may
contribute to TOS
symptoms