Hepatocellular carcinoma (HCC) is one of the most important causes of cancer death in South Korea. Approximately two thirds of the patients are diagnosed in the advanced stage with multiple metastasis and underlying liver dysfunction, so they are not suitable to undergo curative resection. Small HCC has no consensus about diagnostic criteria but became known early stage HCC that means good prognosis. Cases of small HCC have been increasing with the progress of diagnostic methods. We experienced a case of incidentally found small HCC less than 1 cm from liver cirrhosis by liver dynamic imaging, so reported it.