We evaluated 85 cases with atrophy of left iobe among 11,133 cases performed liver scan using "" Tc-phytate from January l984 to January 1990 at Kyungpook National University Hospital in association wr'th underiying causes and related conditions. Seventeen cases seemed to be due to biliary tract diseases, eg, cholelithiasis, cholangiocarcinoma, clonorchiasis and postcholecystectomy state. Fifteen cases were patients with primary and metastatic hepatic malignancies. One case had a history of hepatic irradiation. Thirty cases comprised acute hepatitis, chronic hepatitis, liver cirrhosis and fatty liver. However no causative abnormalities could be detected in 22 cases despite of meticuious diagnostic work-up.