Removal of the thymus does not guarantee remission of mg. I believe a lot depends on your age and the extent of your mg. I had mine at age 55 (5 years after diagnosis) and while it did not put my mg into remission, it did help me control the symptoms better. I was able to wean completely off my prednisone and cut back on the mestinon. However, while I was in the hospital, my nurse told me she had her thymectomy at age 25 and had been in full remission for about 20 years. In fact, she shocked me when she told me she had mg and had a thymectomy because I didn't see any signs of mg. I think, much like the rest of this disease, it is different for every person.

Good luck on your decision.