Thanks. I'm assuming the scans showed compression of the vessels in the arms up position. Did you also have some compression in the arms down position? Did the scans show anything else that lead to the diagnosis, possibly collateral vessels? Or, something else that I'm unaware of?? I ask b/c intermittent venous TOS has recently been suggested for me.

Did you go through w/ surgery this past week? If so, wishing you well during this recovery period. And... really appreciate your reply!