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Fig. 7C —Misdiagnosis with algorithm of hepatocellular carcinoma (HCC) as benign lesion in 47-year-old man with hepatitis B. In portal venous phase, mass (arrow) continues to show inhomogeneous positive enhancement. All three reviewers interpreted C as showing sustained enhancement, incorrectly suggesting benign lesion per first step in algorithm. Contrast-enhanced images are taken in slightly different projection from baseline image. Biopsy showed HCC.