Some women will bandage their arm or wear compression garments to prevent lymphedema on flights. The reason women can develop lymphedema on airplane flights is because of the reduced pressure on the airplanes. You can request free info about lymphedema and it will be sent to you. I ended up having to wear a compression garment on my torso as well as on my arm. If you've ever had an episode of swelling, it would be a good idea to bandage or wear compression vests when you fly.
Swimming is the best exercise for anyone who has had lymph node dissection.
YOu are doing great things by swimming. No one can promise that you won't get lymphedema, but swimming is the best exercise because it adds pressure against your skin. The lymphedema specialist would not be a surgeon. If you tell me which town you live in I can probably help you find one. But I don't know any way to get around making the client selection.