1临床资料1例男性患者,58岁,以“体检发现肝脏占位”就诊,查体无阳性发现。有乙型肝炎病史,甲胎蛋白、癌胚抗原及肝功能检查均未见异常。超声检查:肝脏大小形态正常,实质回声均匀,肝包膜光滑,肝左叶见约4 cm×6 cm低回声团块,边界清,形态规则,内部回声均匀,周边可见高回声包膜,团块内可见点线状血流信号(图1A);超声造影:注入造影剂后22 s团块 1 clinical data 1 male patient, 58 years old, with “physical examination found liver placeholder ” treatment, physical examination found no positive. A history of hepatitis B, alpha-fetoprotein, carcinoembryonic antigen and liver function tests were normal. Ultrasonography: normal liver size and shape, the real echo uniform, smooth hepatic capsule, see the left lobe of the liver about 4 cm × 6 cm hypoechoic mass, the boundary clear, regular shape, internal echo uniform, the surrounding can be seen high echo capsule, Linear blood flow signals were visible in the block (Figure 1A); contrast echography: 22 s after injection of contrast agent