Prospective Study
Copyright ©The Author(s) 2016.
World J Gastroenterol. Oct 14, 2016; 22(38): 8605-8614
Published online Oct 14, 2016. doi: 10.3748/wjg.v22.i38.8605
Figure 1
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Figure 1 Liver metastasis of spinocellular carcinoma. Male, 75 years of age, with history of spinocellular carcinoma of the left lung. Emergency ultrasound performed for colicky abdominal pain identifies a hypoechoic lesion in segment S8 of the right liver lobe (A); Upon contrast-enhanced ultrasonography (CEUS) examination, the lesion shows increased enhancement in arterial phase compared to surrounding parenchyma (B); In following phases (C), there is detectable washout typical for malignant lesions. On CT performed for another reason there is a hypodense lesion on portal venous phase (D) corresponding to metastasis.
Figure 2
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Figure 2 Correlation between number of lesions and diagnostic result of contrast-enhanced ultrasonography. When 4 and more lesions exist, the rate of malignancy is higher and the proportion of inconclusive results lower (P < 0.001).
Figure 3
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Figure 3 Haemangioma. Female, 57 years of age. Ultrasound scan performed for dyspepsia, a hyperechoic lesion found in segment S8 of the right liver lobe (A); Peripheral nodular enhancement after application of the contrast agent (B, C); In the late phase, the lesion blends in with the surrounding liver parenchyma (D); An identical pattern of enhancement could be seen in CT performed later from a different indication (E). Both findings suggest haemangioma.
Figure 4
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Figure 4 Focal nodular hyperplasia. Female, 52 years of age, with anaemia. Native ultrasound (A) shows 19 mm hypoechoic lesion in segment S2 of the left liver lobe. On subsequent contrast-enhanced ultrasonography (CEUS) examination, there is increased centrifugal perfusion in arterial phase (B); In the late phase (C), the lesion blends in with the surrounding liver parenchyma and there is no sign of washout. The CEUS diagnosis was FNH. Magnetic resonance imaging (MRI); (D) performed for another reason after three months verifies the diagnosis - lesion with high signal on hepatobiliary phase of contrast-enhanced MRI.