Hi.. Stage 4 is an advanced stage of the tumour and it cannot be cured.. You can get a second opinion from one of the oncologist available on this web site.. The link is as follows
http://www.healthcaremagic.com/specialists/Oncologist/Dr-Anil-Thakwani/20
Chemotherapy drugs are hepatotoxic and that is the cause for the jaundice. You may have to wait till the jaundice reduces and treat the complications if any that may develop.. There are few other treatment options available.. An oncologist would be able to explain this better...