Don't automatically take your doctor's word about what treatment mode to take as gospel until you do the proper research online. The more you learn about ANs and the different treatment options available, the less frightening it will become. Don't forget, ANs are benign tumors and grow very slowly and unless it causes brain stem compression, they are seldom life threatening. 2 cm is considered a medium size tumor and that is well within the range for stereotactic radiosurgery (radiation). My AN was 1.9 cm when I was first diagnosed and it was about 2 cm when I had Cyberknife.
Read all the available information on anausa.org's website (homepage) to get a good understanding of ANs and the treatments available. Also check out You Tube. Type "acoustic neuroma" in the search box and you will get a bunch of good information from real people about their experiences and what they went through as a result of their choice of treatment. Here is a list of really good You Tube videos that I found:
http://www.youtube.com/watch?v=-IqAG_RnahE&list=PL685BC1C503CB2A81http://www.youtube.com/watch?list=PL685BC1C503CB2A81&v=FjqD6dfl9j8http://www.youtube.com/watch?v=M_dYo-rsQUAhttp://www.youtube.com/watch?v=tZ2HSsU-bPMhttp://www.youtube.com/watch?v=ZbS4K9ENMAghttp://www.youtube.com/watch?v=r9wDN6Oky3shttp://www.youtube.com/watch?v=GKSdcvg3bHIhttp://stanfordhospital.org/clinicsmedServices/COE/cyberknife/Surgery may sound great to some people because of the idea that it is removed from the body but you will find from your research that removal of an AN is not like having an appendix out. If you have appendicitis and it is surgically removed, then all the pain goes away and the offending structure is completely out of the body. Not so with acoustic neuromas. After surgical removal and even after radiation, any symptoms you had before treatment may remain (loss of hearing, tinnitus, and/or balance issues). With surgery, you have the peace of mind of knowing that there is no longer any tumor in your body. With radiation, you have the peace of mind in knowing that further growth has been stopped and hopefully the tumor will undergo necrosis and die. In both cases, tumors can recur so do not think for a minute that surgery will mean no more problems in the future. The best thing to do is to get opinions from neurourgeons who treat BOTH ways - surgery and radiosurgery for unbiased advice. If you are in the proper age range, then you owe it to yourself to consider all available options and not just surgery. As a result of my research, I totally eliminated surgery as an option for me because of all the bad side effects I had read about. I placed the quality of life at the top of my list and as a result, surgery was removed from my treatment options list.
The You Tube videos will tell you exactly what you can expect from the various treatment options and the hardest part will be to decide which one will be best for you. And remember anausa.org's advice - choose a physician and facility with a lot of experience, after all, it is brain surgery and it is your brain that will be worked on.