Dear Sunshinecaregiver,
From past experience with my Dad this has been due to stent blockage. Dad has then been in for a stent clean out (he has metal stents) and also had an extra stent added. This was probably due to Dads tumor location that extra stents were added though. (extrahepatic)
My Dad is also on a permanent dose of low antibiotics to help keep infections at bay, perhaps you could ask about this. They are Ciproflaxin (sp).
My Dad never had any other symptoms only more yellowness and raised bilirubin in blood test. No fevers etc.
He did have a infection after one of his stent changes though that was soon sorted out with IV antibiotics.
Good luck and best wishes