看来越王兄也是一位医林中人。提的问题，据我所知，还不清楚。Pubmed有几篇综述，或可一看。

我有空也会去细看一下。下面是一医学网站里的一句话：The way in which hepatitis C virus causes liver cancer is not well understood. It is known, however, that cirrhosis from any cause is a risk factor for the development of liver cancer. It has been argued, therefore, that hepatitis C virus, which causes cirrhosis of the liver, is an indirect cause of liver cancer.

问好！