Hi, ...and sorry to see you are going thru this too, but as you have found out, you are not alone any more.
Good advice above and more throughout this forum. I highly recommend you choose your surgeon very carefully and get 2nd opinions as soon as you can. The smaller the tumor the less post ops side effects generally when removed early on surgically. Also,...the radiation treatments available are state of the art, but they are limited in the size that can be treated. Check with your doctors on the choices available and on this forum, as I am right now. I haven't decided my choice yet either.
Not to scare you,...but I had my 1st AN removed 3 years ago and now it came back for a 2nd time. The MRI showed it was approx 7mm x 5mm. After surgery was completed, the Dr told me it had grown larger than was expected and I had made the right choice to do the surgery then and not later. The surgeon back then also told me "it had all been removed". Guess not, huh? After surgery or radiation, you should have an annual MRI completed just as a follow-up and peace of mind. I waited nearly 18 months from my last MRI and just found out I have a regrowth AN. 2nd time it is 1 CM in size and it wasn't found in my last MRI. Therefore, an AN tumor can grow more quickly than what you may have been told by your Dr. I was never to good at metrics but basically a CM is larger than a MM.
Research, research,....research. BE INFORMED!!!!! Then make your decision and don't look back in regret. Be at peace with your choice, yourself, your family, and your God!! I'm telling myself this as well as everyone else who reads it
Take care and I'll keep you in my prayers