At long last, Christian had surgery yesterday to remove and unusual mass on his upper thigh.
He was very calm on the drive, and remained calm until the nurses started touching him to start the IV process. Happily, they have somebody whose specific job is to come in and help the kids understand what's going on, reassure them, etc. And she was absolutely fantastic!
Everything went well, and today is the day after and Christian is back to his normal self!
We wait one week for the biopsy results but the doctor doesn't seem too concerned. He said it look like at some point Christian had a huge charlie horse (which confuses me because the mass was above the muscle, not in the muscle).