以往 ,门静脉癌栓常常被认为是肿瘤的晚期表现 ,而如何明确其性质和部位以及来源则又是临床上非常棘手的问题。随着近 10年来医学技术和设备的进步 ,临床医生对这一问题的认识已经取得了较大的进展 ,为内科、外科和放射介入治疗提供了非常有用的理论依据。在我国 ,门静脉内出现 In the past, portal vein tumor embolus was often considered to be the late manifestation of the tumor, and how to determine its nature, location and origin was clinically a very difficult problem. With the advancement of medical technology and equipment in the past 10 years, clinicians have made great progress in understanding this issue, providing very useful theoretical basis for internal medicine, surgery, and radiation interventional therapy. In our country, the portal vein appears