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Figure 2. Small hypervascular metastasis. (a) A hypoechoic lesion can be seen on this conventional ultrasound adjacent to the portal vein. No Doppler flow from within the lesion has been demonstrated. (b) The lesion is very difficult to identify on this portal venous phase CT despite being approximately 1 cm in diameter. However, increased attenuation in the region of the arrows and a poorly defined focal abnormality, are identifiable.





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