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Assessment of hepatic VX2 tumors with combined percutaneous transhepatic lymphosonography and contrast-enhanced ultrasonographic imaging
Author(s): 
Pages: 3908-3913
Year: Issue:  24
Journal: WORLD JOURNAL OF GASTROENTEROLOGY

Keyword:  Percutaneous transhepatic lymphosonographyUltrasoundContrast-enhanced ultrasonographic imagingUltrasound contrast mediaVX2 tumor;
Abstract: AIM: To evaluate the feasibility and efficacy of percutaneous transhepatic lymphosonography (PTL) as a novel method for the detection of tumor lymphangiogenesis in hepatic VX2 of rabbits and to evaluate combined PTL and routine contrast-enhanced ultrasonographic imaging for the diagnosis of liver cancer.METHODS: Ten rabbits with VX2 tumor were included in this study.SonoVue (0.1 mL/kg) was injected into each rabbit v/a an ear vein for contrast-enhanced ultrasonographic imaging,and 0.5 mL SonoVue was injected into the normal liver parenchyma near the VX2 tumor for PTL.Images and/or movie clips were stored for further analysis.RESULTS: Ultrasonographic imaging showed VX2 tumors ranging 5-19 mm in the liver of rabbits.The VX2 tumor was hyperechoic and hypoechoic to liver parenchyma at the early and later phase,respectively.The hepatic lymph vessels were visualized immediately after injection of contrast medium and continuously visualized with SonoVue(R) during PTL.The boundaries of VX2 tumors were hyperechoic to liver parenchyma and the tumors.There was a significant difference in the values for the boundaries of VX2 tumors after injection compared with the liver normal parenchyma and the tumor parenchyma during PTL.CONCLUSION: PTL is a novel method for the detection of tumor lymphangiogenesis in hepatic VX2 of rabbits.Combined PTL and contrast-enhanced ultrasonographic imaging can improve the diagnosis of liver cancer.
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