34, 5'1,164 goiters on thyroid, rt side tyroid removed due to goiters still have them on left. Left throid normal size 1 goiter size 1.1 the other .8mm with a more soild look. when rt side remove no cancer. Family history of thyroid problems mother, Aunt had precanerous and had her totally removed. I take 75mg sthnyroid. hard to swallow should I be concern about cancer?