Arterial TOS is the rarest form of TOS. It is caused most frequently by bony compression of the subclavian or axillary artery as it passes through the thoracic outlet. Arterial TOS is the type of TOS most commonly associated with a cervical rib.

With repeated compression of the artery, there can be limited blood flow to the arm, which may result in tingling and numbness. Patients often notice these symptoms when they sleep with their arm in the wrong position. If blood flow limitations are severe enough, there can be necrosis of the arm, or loss of tissues.

Another complication of arterial TOS is the formation of an aneurysm, or weakening of the arterial wall, with focal dilation, or ‘ballooning’ of the artery. Your doctor may find this as a pulsatile mass at the base of your neck.

Small blood clots may form within an aneurysm, and may break off to follow the arterial flow to more distal and smaller arteries. This may result in tiny areas of gangrene in the fingers, or with occlusion of larger arteries, necrosis of larger areas of the arm or hand.

This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you. This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you.

This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you. This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you.

Thoracic Outlet Syndrome is a difficult clinical diagnosis. Imaging of the disease has been a dream for decades, but is now available. Thoracic Outlet Syndrome is a difficult clinical diagnosis. Imaging of the disease has been a dream for decades, but is now available.

This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you. This is a test of the emergency broadcast network. Diagnose thoracic outlet syndrome with NeoVista® MRI. The clinical diagnosis of thoracic outlet syndrome is fallible and inaccurate. The complexity of the disease is not disputed by any expert in the field. The need for imaging has existed for decades, and is now available at a high level for you.