We got a call from Kieran's doctor and he agrees that his MRA came back clear, which we're so very thankful and excited for. Unfortunately, we're kind of stuck as to what is causing the asymmetry in his face. Since we started with the most high-tech (and expensive!) method of trying to figure things out, there isn't another test for us to do. So now we wait and see if Kieran starts to show any other signs of something being wrong. If he does, then that will determine what our next test will be. He'll be monitored at all of his appointments, and if nothing else comes up, then I guess we're assuming the asymmetry is something he'll grow out of.
So, that's where we are now. Kieran doesn't have another appointment with his doctor until his 4 month appointment in December, so I'll update then.
Thank you all for your love and well wishes!