I'd be interested in knowing if the results for radiation treatment after partial resection by surgery are different than for just radiation.
I think most of the published reports on radiation therapy deal with radiation as the initial and only treatment, although some do mention other cases. The general result is that hearing is preserved between 50% and 70% of the time, and facial nerve function is preserved in better than 90% of the cases. Statistics are only statistics, each case has its own special destiny, but there is every reason to be optimistic about the outcome of the radiation.
Steve
PS to Jim: I think it is okay for lay people to quote published results and reports from physicians, even though we are not ourselves doctors. When we do so, we are really just relaying information, and perhaps rephrasing it to make it easier to understand. I'm not actually offering an opinion at all, I'm just giving my understanding of the expressed opinions of qualified professionals.