The Thoracic Outlet Clinic at Baylor Medicine in Houston ... Three to four percent of cases of TOS are due to obstruction or clotting of the main vein to the arm - the subclavian vein - a condition ...

Adson’s sign or Adson’s maneuver is used to diagnose thoracic outlet syndrome ... the subclavian artery and rarely the subclavian vein, which does not normally pass through the scalene ...

The thoracic outlet is the area where the subclavian artery and vein and the brachial plexus ... that can be elicited by various provocative maneuvers is present. The authors' experience has ...