Hi mphung,
That is great to hear that your mums surgery went so well, and yes it does indeed sound like a difficult one, I hope that her recovery continues to go smoothly and my fingers are crossed as well for the pathology results. Please let us know how they go and also keep us updated on how her recovery goes as well.
It sounds like your mums surgeon was very good and I wonder if you could please post who he/she was and post some info on this thread as I know that will be of great use to other members in the future? Thanks.
http://www.cholangiocarcinoma.org/punbb/viewtopic.php?id=3126
My best wishes to you and your mum,
Gavin