Janey,
Your recent MRI may or may not show "rapid growth." These are inexact measurements. Just my 2 cents, but you probably have some W&W time yet before you'd have to take action. MY AN was 1.4 CM when diagnosed (late-40's) and I waited another 3 years until my 4th MRI showed a 1.8 CM before deciding on GK in 2013. Everyone's different, and we all must decide what's best for us, factoring in our age, health, family, career, insurance, life-expectancy, etc. But don't be swayed by doctors, or by others on this board, to take action before you believe it's what's best for you. Choose your own course.
By the way, GK is no picnic, but after a rough first year post-GK, I've felt great the 2nd year post-GK. I'm having my next annual MRI on Friday and I'm hoping to go to MRIs every other year going forward. Time to get on with life!!
Best wishes,
Petrone