Very nice, but I'm not sure it's the first of any kind of brain surgery done without cutting into the skull, though I guess it's the first time for this particular problem. My wife's niece just recently had a brain tumor removed with surgery going through the nose. This in the Houston, TX area. The tumor is apparently benign, but threatened her vision. She'd had previous surgery but it hadn't gotten the whole thing. They think they got it this time, and she's happy that it doesn't involve skull healing and hair loss and all that.
Anyway, it's certainly a grand thing not to have to cut holes in the skull. It seems as if miniaturization of viewing and the like has been quite a boon