Miranda ~
I underwent a partial resection of my AN using (as far as I know) a 'conventional' retrosigmoid approach. The remaining tumor was radiated via FSR. This approach yielded excellent results.
However, the research I've seen on the
modified retrosigmoid technique appears to be successful in increasing the likelihood of hearing preservation and avoiding facial paralysis, with an almost-infinitesimal percentage of re-growth (less than 3%). Part of the challenge for the surgeon is that, even with an MRI scan, he or she won't know exactly what they're dealing with until the skull is opened and the tumor is exposed. This occasionally necessitates an on-the-spot change in approach but an experienced neurosurgeon can deal with this kind of situation.
I would ask a few more questions of Dr. Sisti regarding his experience with and expectations for the 'modified' retrosigmoid approach surgery he's suggested. The fact remains that no doctor can or will guarantee the precise outcome of acoustic neuroma removal surgery, including hearing retention and facial mobility, post-op. That having been noted, I offer my best wishes to you and your husband and hope that he can reach a decision on the type of surgery he'll have and the doctor who'll perform it (which is always a difficult choice) and obtain a firm surgery date, soon. If we can assist either of you in any way, just ask.
Jim