Hi LAG! Welcome to our little club! I am sorry you had to find it, but you will not find a better place for support and information. First of all, I don't know if you have found it, but there's a link on the anausa.org main page that will take to a spot where you can request information on all things AN. It's free and very informative. I believe all you have to do is fill out the form with you address and it will be snail mailed to you. As far as your question on the different approaches, it all comes down to where they access the tumor on your skull. With middle fossa (which is what I had) they do it forward and above your ear, and retro is behind and below, I believe. It basically comes down to what your doctor is more comfortable doing. Of course, tumor size and position does play into it as well. I did retain hearing but it's about half of what it was. I did get a BAHA (a bone anchored hearing aid) which has helped immensley. I don't think I've ever heard of anyone coming out of surgery with perfect hearing, once the AN starts compromising the hearing nerves they dont' bounce back. Please take the time and do searches on this forum, using keywords such as retro, middle fossa, etc. We are not doctors and of course every person is unique to just try to get a general feel on how this stuff all works. If you have any pointed question we will help you try to answer them. Good luck in your decision, and please let us know how it goes!
Jay