My mother has had jaundice and bile duct obstruction.stent was placed a year ago and its been changed six months back. She has gone through all the tests ct scan etc biopsy was taken twice and the report was clear as there was no sign of malignancy. Dr said that there is tumor(guilty) causing the obstruction and it has to be removed by a surgeon. I want to ask how major this surgery would be? Cuz she is already suffering from excessive tiredness. She feels tired all thr time even when she is on bed all day. Dr said its because of the weakness.pls guide me about the risks of surgery and is there any other treatment?