Thank you for your concern. I'm certainly looking at all my options, but I will not act until I know the result of my 6 month MRI. I've seen and heard of some terrible outcomes.
The main driving medical quote for me is from a paper entitled "What intervention is best practice for vestibular schwannomas? A systematic review of controlled studies" from BMJ Open dated 4 February 2103, The conclusion is:
"The available evidence indicates radiosurgery to be best practice for solitary vestibular schwannomas up to 30 mm in cisternal diameter."
My cisternal diameter is about 2.6 cm, so I've got 4 mm up my sleeve. It's a gamble, but only a small gamble. By the way, once you've been diagnosed with an acoustic neuroma, all paths are a gamble; some of them quiet scary.
I'll be checking my interpretation of cisternal diameter by consulting the Gamma Knife unit here in Sydney.
What can happen in 6 months?
1) It could grow >4 mm. This would be sad as then I may be pushed to surgery which is scary.
2) It could grow >2 mm. This would be to proceed with my preferred intervention, which is currently radiosurgery
3) It could grow <2 mm. This would buy me another 6 months to increase my knowledge base
4) It could not grow at all. More years to increase my knowledge base, but more importantly, medicine's knowledge base (eg. pharmacological solution)
5) It could shrink. If this continues, no treatment would be required.
I don't know the probability of each, but I suspect the closer to the middle of the five, the more likely they are. My 6 months MRI will tell me what is happening.
By the way, I'm monitoring my symptoms all the time including monthly formal hearing tests and daily informal hearing tests (relative measure only) using http://newt.phys.unsw.edu.au/jw/hearing.html
. Any significant degradation would be cause to accelerate the decision making process. I'm also taking a quarter of aspirin a day since it may help and is well tolerated (and has other benefits).