Concerned...

I am coming up on my 1 year since my TT for Hurthle Cell. I had a RAI in Dec 2011. I have located a mass about 2 inches or so above my incision site. I have been to all my cancer appointments and all blood work have come back in the areas that the levels should be. I am due to see my ENT on oct 8. And have a ultra sound of the area on In Nov and meet with my cancer dr in Dec. Is the mass normal maybe scar tissue or is this something I should be really concerned about? I will be letting the dr know next week about it or should I contact him ASAP about it?

Thanks I am just really worried that the cancer maybe back or something..

Stacie