Hi Sible,
Welcome! I live in Toronto so I can certainly offer some help.
Are you sure you are scheduled for a pre-op with Dr. Parnes and not just a consult. Pre-op appointments are usually done after you have your consult with the surgeon and agree to have surgery. There's paperwork and testing to be done at pre-op appointments and then you are provided with a surgery date after the paperwork is processed. If this is your first appointment with Dr. Parnes, it will most likely be a consult and he can tell you who the neurosurgeon is he partners with and what the wait times are for surgery. I was told the Retrosigmoid approach requires a neurosurgeon only, while Translab requires both an Otolaryngologist and a Neurosurgeon.
You do have choices through our med system. You can request more than one consult and you can choose the surgeon you wish to have operate on you. You do not have to stick with whomever the ENT refers you to if you are not happy with them.
I have heard of Dr. Parnes through ANAC (Acoustic Neuroma Association of Canada), and I believe he has a very good reputation. Having said that, I would still recommend you try and get at least one or two more consults to compare your options. Ask your ENT or GP for additional referrals. Dr. John Rutka, Otolaryngologist at Toronto General is tremendously experienced with Acoustic Neuromas. He partners with Dr. Michael Tymianski, Neurosurgeon, and he can also set up a consult for you at the Toronto Western Hospital with Dr. Norman Laperierre who heads up the Gamma Knife. Dr. Michael Cusimano at St. Michael's hospital is both a highly skilled Neurosurgeon and he also performs Gamma Knife Radiosurgery. There are a few other specialists at Sunnybrook Hospital, but you would have to contact ANAC for their names as I'm not overly familiar with that hospital. There is a Dr. Akagami (I believe that's the correct spelling) who is well know in British Columbia for Retrosigmoid surgery - if you wanted to travel outside of Ontario and still have OHIP coverage. Cyber Knife is available in Hamilton and Ottawa, but to be honest I've never heard of anyone getting Cyber Knife treatment for AN's at those locations - doesn't mean they don't do it though!
I was diagnosed with a 1.8cm AN in the spring of 2012. I was offered Retrosigmoid surgery, Translabrynthine surgery and Gamma Knife. By June 2013 my AN had grown to 2.4cm and I chose Gamma Knife. I was told surgery would average 9 hours without complications, I would be off work 3 - 6 months. Gamma Knife was a one day event and I was off work for 3 weeks. It was a long hard decision to reach for many reasons, but one I am most happy with. Please take your time to do your research and get at least one more consult. You want to make the best choice possible for your personal situation. The size of your AN certainly falls into an acceptable size for Gamma Knife - I am not obviously a specialist in this field so I can't say if there are reasons due to the AN location that Gamma Knife would not work - but I wouldn't rush into surgery without checking all my options.
Please feel free to email me with any questions.
Take care and best wishes!
Cathie.