a lot of us have swelling around and above the collar bone as part of our TOS. I've always assumed or been told that it's due to the swamp effect of the rib and collar bone compressing nerves, vessels, etc.

I just had a PT tell me that TOS could cause lymphedema, a backing up of the lymph system, from that compression. Has anyone ever found that they have issues with their lymph system? I tried to look this up and didn't find anything about it in TOS literature. Hmmm.