Bob, if your swelling is worse in the morning but getting better in the afternoon, I think it is lymphatic fluid, that how I experienced. After 8 months, the lymphatic fluid under my chin was finally gone, then I started to feel this strange aching in my mandible bone now. Has done a bone scan, will do biopsy in a few days. I am very very nervous now. Real difficult to handle the "here we go again" situation.