I do understand that you have hyperthyroid from 2006. Many of your complaints seem to be related to your hyperthyroid state. considering your long duration of hyperthyroidism
and swallowing difficulties
, i would prefer to remove your thyroid gland. Once surgery is done and if everything goes on well,you will be mostly cured of the problem. Your enlarged thymus
would require further investigation to decide on nature of enlargement. But final decision can be taken only after complete examination and evaluation.