Fig. 1.

Triple phase contrast-enhanced CT of the liver in the arterial, portal venous, and equilibrium phases shows a lobulated multinodular tumor with several different density and enhancement patterns. At the superior portion of the tumor was distinctly markedly hypodense fatty component (arrowheads, row A) with adjacent areas of arterial phase enhancement, and venous and delayed phase washout (arrows, row A) suspicious for hepatocellular carcinoma. A few satellite nodules showed similar fatty density. More inferiorly, a mid-anterior component showed progressive and late enhancement (arrows, row B) suggestive of cholangiocarcinoma, and a central component showed persistent hypodensity with little or no enhancement (stars, row B) in keeping with tumor necrosis. Additionally, in the subcapsular region was a non-specific solid component showing persistent and slight hypoenhancement relative to the liver parenchyma (arrows, row C)