this came from a PT office: (notice the use of TOC instead of TOS as it actually is)

I checked with our head therapist and she said that we have treated TOC but it is not a commonly diagnosed problem, so we have treated it on a limited basis. If you have an order for PT, we would be happy to see you.

Oh yes- so many "names" it is called by.

[The other diagnostic labels that have been used to describe thoracic outlet syndrome are:

Cervical rib syndrome
Scalenus anticus syndrome
Costoclavicular syndrome
Hyperabduction syndrome
Pectoralis minor syndrome
Brachiocephalic syndrome
Nocturnal paresthetic brachialgia
Fractured clavicle-rib syndrome
Effort vein thrombosis (Paget-Schroetter syndrome)
Superior outlet syndrome
Naffziger syndrome
Subcoracoid pectoralis minor syndrome
First thoracic rib syndrome
Costoclavicular compression syndrome
Cervical rib and band syndrome

The three most common types of thoracic outlet syndrome in our clinic is the scalenus anticus syndrome, the costoclavicular syndrome and the hyperabduction syndrome.]
http://lloydchiro.com/2011/10/other-...tlet-syndrome/

It is also called

There is nothing wrong with you.