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Fig. 6. —Low-power photomicrograph of representative radiofrequency lesion (same lesion as shown in Figure 5) shows three zones: inner necrotic pale zone (N) that contained dead, empty vacuolated hepatocytes on highpower microscopy; red rim (H) that contained hemorrhagic material and thrombosed vessels without any viable cells; and outer pink rim (P) that contained an admixture of hemorrhage and viable hepatocytes. These zones corresponded to zones visible on Figure 5. Normal liver (L) surrounds radiofrequency lesion.