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Hepatocellular carcinoma in an 81-year-old woman. (a) Gadolinium-enhanced T1-weighted MR image shows a hypervascular mass (arrow). (b) On a fat-suppressed fast spin-echo T2-weighted MR image, the mass is slightly hyperintense (arrow). (c) Diffusion-weighted image (b = 500 sec/mm2) shows the mass with high signal intensity (arrow). (d) On an ADC map, the mass demonstrates restricted diffusion (arrow).
