微血管侵犯对单发小肝癌患者术后无进展生存期的影响

Influence of microvascular invasion on progression-free survival in patients with a solitary small hepatocellular carcinoma

目的 探讨微血管侵犯（MVI）对单发小肝癌患者术后无进展生存期的影响及其危险因素.方法 回顾性分析2010年1月至2012年12月我院手术治疗的126例单发小肝癌患者的临床病理资料.分析年龄、性别、乙肝及（或）丙肝病毒感染、饮酒史、合并症、腹水、肝硬化、肿瘤大小、肿瘤分化、MVI、卫星结节、AFP、CA19-9、ALT、TBil对术后无进展生存期的影响及MVI与上述临床病理指标的相关性.结果 单发小肝癌患者手术切除后1、2、3年无进展生存率分别为81.0％、60.3％、47.3％.单因素分析显示,MVI、合并症、肿瘤非高分化、肿瘤＞4 cm是影响单发小肝癌患者手术切除后无进展生存期的危险因素.多因素分析显示,MVI和合并症是影响单发小肝癌患者术后无进展生存期的独立危险因素.MVI发生率为43.7％.其中无MVI患者中位无进展生存期为45个月,1、2、3年无进展生存率分别为91.5％、67.6％、56.0％;有MVI患者中位无进展生存期为30个月,1、2、3年无进展生存率分别为67.3％、50.9％、35.4％.单因素分析显示,AFP＞ 100 μg/L、肿瘤非高分化和卫星结节是MVI的危险因素.多因素分析显示肿瘤非高分化是MVI的独立危险因素.结论 MVI是影响单发小肝癌患者手术切除后无进展生存期的重要因素,AFP＞ 100 μg/L、肿瘤非高分化和卫星结节是MVI的危险因素,尤其是肿瘤非高分化.

Objective To study the influence of microvascular invasion （MVI） on progression-free survival （PFS） in patients with a solitary small hepatocellular carcinoma,and to analyze the risk factors of MVI.Methods 126 patients with a solitary small hepatocellular carcinoma who underwent liver resection at Tianjin Medical University Cancer Hospital from January 2010 to December 2012 were retrospectively studied.Their demographic and clinicopathological characteristics including age,gender,HBV infection,HCV infection,alcohol consumption,comorbidity,liver cirrhosis,ascites,tumor size,tumor differentiation,MVI,satellite lesion,AFP,CA19-9,ALT and TBil were analyzed.Results The 1-,2-and 3-year PFS rates of patients with a solitary small hepatocellular carcinoma were 81.0%,60.3% and 47.3% after surgical resection,respectively.Univariate analysis revealed that MVI,comorbidity,non-well-differentiated tumor,tumor size 〉4 cm were risk factors of PFS.Multivariate analysis demonstrated that only MVI and comorbidity were independent factors of PFS.MVI occurred in 43.7% of the patients.The median PFS of patients without MVI was 45 months,and the 1-,2-and 3-year PFS rates of these patients were 91.5%,67.6% and 56.0%,respectively.The median PFS of patients with MVI was 30 months,and the 1-,2-and 3-year PFS rates were 67.3%,50.9% and 35.4%,respectively.On univariate analysis,AFP 〉 100 μg/L,non-well-differentiated tumor and satellite lesions were significantly associated with MVI.On multivariate analysis only non-well-differentiated tumor was independently associated with MVI.Conclusions MVI was an important factor affecting PFS in patients with a solitary small hepatocellular carcinoma.AFP 〉 100 μg/L,non-well-differentiated tumor and satellite lesions were risk factors of MVI.