Hepatocellular carcinoma with tumor thrombus in bile duct: A proposal of new classification according to resectability of primary lesion

Figure 7 New proposal of classification for hepatocellular carcinoma with bile duct tumor thrombus. Type I: Hepatocellular carcinoma (HCC) with microscopic bile duct tumor thrombus (BDTT); Type II: Resectable first-occurring or recurrent HCC mass in the liver with BDTT; Type III: BDTT without obvious HCC mass in the liver; Type IV: BDTT accompanied with unresectable intra- or extrahepatic HCC lesions. BDTT can be further divided into two subtypes according to whether tumor cells of thrombus invades into the extrahepatic bile duct wall (subtype a) or not (subtype b). BDTT: Bile duct tumor thrombus.