Fig. 2

Hepatocellular carcinoma with negative ¹⁸F-fluorodeoxyglucose uptake on positron emission tomography. The hepatocellular carcinoma (diameter, 2.0 cm) in segment 6 exhibits staining during the arterial phase of contrast computed tomography (a) and washout during the equilibrium phase (b). The tumor has equal ¹⁸F-fluorodeoxyglucose uptake to that of surrounding liver on positron emission tomography (c). Arrows indicate the tumor