Safety and Efficacy of Simultaneous or Staged Surgery on Complicated Hepatolithiasis

For some complicated hepatolithiasis, it is difficult to decide whether to perform surgery on biliary stone and portal hypertension simultaneously or separately by staged surgery.There's a high risk of intraoperative bleeding, postoperative liver failure and variceal bleeding for these patients.How to develop a optimized algorism of simultaneous and staged surgery is highly needed. In this protocol, we will assign the eligible cases into two group. And then perform surgery as simultaneously or separately.By long-term follow-up,to examine the safety and advantages of each procedure.