I had surgery, then FSR three months later, as a planned method of reducing my large AN to a radiation-friendly size. This approach was taken to avoid complications such as facial paralysis, etc. It went near-perfectly.
My 6-month post- FSR MRI scan showed tumor swelling (3 mm) and I experienced shooting pains on my 'AN side' as well, but no headaches or the profound fatigue that some other FSR patients seemed to experience.
My one-year MRI showed small but significant (to my neurosurgeon) tumor shrinkage and the very beginnings of necrosis.
My 18 month MRI showed continued shrinkage and further evidence of necrosis. My neurosurgeon was ecstatic and I wasn't exactly unhappy, either.
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I'm looking forward to my 2-year MRI (in June or July) as I expect further necrosis will be visible.
The thing to take away from this thread is that, following FRS (or GK/CK) it apparently takes about 12 months before any visible sign of tumor shrinkage and/or necrosis will be evident on an MRI scan. Patience is needed because there clearly will be some transitory after-effects from radiation treatment. Fortunately, if all goes well, tumor shrinkage and necrosis is eventually seen on the follow-up MRI scans. Life returns to normal and we can write about our experiences on the ANA message forums.
Jim