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Fig. 6A —76-year-old man with hepatolithiasis and periductal fibrosis, which were confirmed by the left lobectomy. Hepatic arterial phase scan shows dilated left intrahepatic duct filled with low-attenuated material (arrows) that was identified as intraductal stones. Around the dilated duct is geographic high attenuation (arrowheads), suggesting transient hepatic attenuation difference, in atrophied left hepatic lobe.