Objective To detect the correlations between vascular endothelial growth factor (VEGF) expression, microvessel density ( MVD) and time intensity parameters of contrast enhanced ultrasound in hepatocellular carcinoma (HCC). Methods Seventy-three patients of HCC were analyzed with time intensity curve of contrast enhanced ultrasound. VEGF and CD34 in different degree of differentiated HCC specimens were detected by immunohistochemistry. The correlations between VEGF, MVD and time intensity parameters were analyzed. Results Arrival time had no significant difference among different differentiated groups. However, the area under the curve, enhanced time and washout time had significant difference among different differentiated groups respectively ( P <0. 05). There was a positive correlation between VEGF expression and MVD in HCC. MVD was associated with enhanced time and the area under the curve ( r = - 0. 615,0. 563,respectively). The area under the curve,enhanced time and washout time of VEGF positive expression group had significant difference comparing to those of VEGF negative expression group ( P < 0. 05). Conclusions It was helpful to assess HCC differentiated degree with time intensity parameters of contrast enhanced ultrasound.%目的 探讨超声造影动态增强定量分析与肝细胞肝癌(HCC)VEGF表达及微血管密度(MVD)间的关系.方法 对73例HCC患者超声造影结果进行时间强度量化分析;通过免疫组织化学方法检测不同分化程度肝细胞癌VEGF的表达,同时CD34染色计数肿瘤MVD;分析超声造影时间强度量化分析和VEGF表达、MVD以及临床病理因素之间的关系.结果 HCC不同病理分化程度组间超声造影到达时间差异无统计学意义,增强时间、消退时间及曲线下面积各组间差异有统计学意义(P<0.05).37例(50.7%)HCC组织中VEGF呈阳性表达.VEGF表达阳性组MVD明显高于VEGF表达阴性组(P<0.01).VEGF阳性表达组中增强时间、消退时间及曲线下面积与阴性表达组间差异有统计学意义(P<0.05).增强时间与MVD呈显著负相关(r=-0.615),曲线下面积与MVD呈显著正相关(r=0.563).结论 通过超声造影时间强度曲线分析,可以初步评估肿瘤的分化程度,反映肿瘤内新生血管,为评估HCC的抗血管治疗提供了新的依据.
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