New Concepts of Thoracic Outlet Syndrome that Explain Etiology, Symptoms, Diagnosis, and Treatment

From the University of Colorado School of Medicine, Denver, Colorado. There are four basic concepts of paramount importance for the clear understanding of thoracic outlet syndrome (TOS). The first is that patients who develop this common syndrome have an anatomic abnormality that makes them predisposed to develop symptoms of TOS under certain conditions.’ The second basic concept of TOS is that the symptoms are caused by -’.