Fig. 2

Enhanced CT images from the arterial and venous phases of the liver. A circular low-density shadow with a diameter of about 20 mm can be seen in the right lobe of the liver, with unclear boundaries. There are a few flocculent high-density shadows around the lesion, with unclear boundaries. On enhanced scanning, circular enhancement can be seen at the edge of the lesion in the arterial phase, and circular low-density shadows can be seen at the edge. In the portal and delayed phases, the enhancement fills inward. There are a few flocculent arterial phase enhancement shadows around the lesion, and the enhancement exits in the portal and delayed phases, presenting a relatively equal density shadow