I have swelling in the left supraclavical (sp) area. I am over 50 and am a thyroid cancer survivor. My grandfather had colon cancer, my aunt had stomach cancer , I myself have low b12 levels. I go for a CT scan in a week. I did have bad acne on my arms for months, which did get infected somewhat. Is it possible that the swelling is from the problem with my arms, or, should I mentally prepare myself for cancer again....(90% chance). There is only swelling, the doctor is not sure he is even feeling node on second examination, might be some kind of heart artery he said. I have no other symptoms and feel well.
Hello and welcome to Chat Doctor !!! From the history that you have given of thyroid cancer it would be better if you got a FNAC done of the swelling because you are at risk of having a metastasis or since the supraclavicular area is the Chat Doctor.  The low B12 levels are a concern too if they are persistently low despite supplements ask your doctor to test for the intrinsic factor deficiency along with the FNAC. Take care.