Hope you continue to recovery well. I also, had a positive EMG/NCV test and had my right first rib removed 8 years ago. I am still symptom free on that side but I am back dealing with TOS on the other side.

Your swelling may be due to all the IV fluids you had while you were in the hospital. Have you mentioned it to the doctor(s) as it could merely be fluid retention from the IV fluids/medications but it could also be a reaction to something. I turned out to be allergic to the bandages but didn't realize it right away. I've learned it doesn't hurt to ask a question.