Hi Anne. I am 28 and I have had two ANs. The first was found in Dec 1995, on the left side about the size of a golf ball. I had this one surgery removed. Four years later it had regrown to the same size. I do not tell you this to scare you. Only to scare you into keeping up with your MRIs. AN are NORMALLY very slow growing tumors, I just lucky and had a very aggressive one. I had the second removed in Fed of 1999. I am doing great. I also had the some amount that was left on my tempral bone lasered with the STR. (that was not fun). In Jan of 2000, I had another MRI and it was smalled. I never thought I could be so happy. I am due for another in Sept. I wish you the best of luck with yours. My Doc is Dr Harold Smith in Lubbock Texas. To me he is the best man, he has saved my life twice. If you have any questions. just ask me, with ANs I have done it all.