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Fig. 1C. —67-year-old man with low-grade dysplastic nodules in right hepatic lobe. Lesion-to-liver vascular ratios were as follows: for larger nodule, cumulative artery ratio = 0.88, hepatic artery ratio = 0.7, portal vein ratio = 0.82; for smaller nodule, cumulative artery ratio = 1.71, hepatic artery ratio = 1.14, portal vein ratio = 0.84. Photomicrograph of histologic specimen of portal triad in larger nodule. Normal preexisting hepatic artery and portal vein can be seen. A = preexisting hepatic artery, P = portal vein. (H and E, x 130)