Hello and welcome to the best site for MGers like us. Yes I had my thymus removed right away, and I had no tumor, my thymus was spread throughout my chest like fatty tissue. I had my surgery in 1991 and yes it is major surgery but it put me into remission for 17 years, and I mean complete drug free remission. Now remember surgery has come a long way since the 70's. I understand your fear but try to relax and remember Drs today know sooo much more than they did 40 years ago. {I can't believe I am referring to the 70's as 40 yrs ago}