Intrahepatic metastases in hepatocellular carcinoma: the role of the portal vein as an efferent vessel.

摘要: The mechanism and pathogenesis of the high frequency intrahepatic metastasis in hepatocellular carcinoma (HCC) has not yet been elucidated. Two hundred thirty one tumors (⩽ 5 cm diameter) resected specimens HCC were examined for relationship between mode tumor spread size. Efferent vessels identified by direct injection radiopaque material into 23 liver selected at random from 231 tumors. most frequent site was capsular invasion followed extracapsular invasion, vascular finally metastasis. There a strong statistical correlation presence (correlation coefficient = 0.998). Radiopaque injected directly entered only portal vein 17 both hepatic veins six In all eight patients with unresectable lesions, media percutaneously nodules flowed vein. These findings suggest that progresses to may act as an efferent vessel.