Jen,
I responded to your other post before realiizing you are dealing with a regrowth. I'm so sorry--as Jim so aptly put it, knowing a regrowth is rare doesn't help a bit when you're the unlucky statistic.
I just had a regrowth removed (1.8 cm in feb of this year, 5 cm in 1989), and was told EXACTLY what you were--total removal then, must have been a stray cell left behind.
Did you have balance issues/loss of hearing or other post-op issues after your first surgery? The good news is that you may "get off easier" this time because your brain has already compensated for any nerves previously damaged/sacrificed. Even though I'm very achy and fatigued (16 days post op), since I don't have to deal with the balance/facial palsy issues , I can feel that I'm healing at the speed of light compared with last time around...
Please feel to PM me if you have any questions, and best wishes to you!
Carrie