Hi Cab,
Well, to me, sounds about right. Like your's, mine did not "fill" the IAC but lays in it kinda sideways, almost like an egg, but doesn't touch the walls of the IAC... but this is based on what I could tell that you wrote. When I look at mine on the MRI films, I see it width-wise, but not top to bottom as much, if that make sense. As long as it is still in the IAC and not into the CP Angle region (mine was definately pointing in that direction with a hint of it peeking into the CP angle region), sounds like you definately caught it in time before it could really wreck some havoc

That may help bring you some peace of mind

Although I did not have the micro-surgery, what you note, if my old-age memory serves me right, sounds about the same as many here have had done. Hoping many here will chime in to let you know and how they did post surgery. I know it is tough to hear from the dr's when they provide the "anticeptic" version, but... I have faith in the folks on this forum to help bring some peace of mind as well.
Hang tough!!!!!! we're cheering you on.
Phyl