A roentgenological study was performed on 218 cases of primary hepatocellular carcinoma admitted to Kyungpook National University Hospital during the past 5 years from 1970 to 1974. Fifty-two cases were presented to illustrate various pulmonary metastatic manifestations of primary hepatocellular carcinoma. From our experience and a review of the literature, pulmonary metastasis has been found that on chest X-ray film as; 1) diffuse discrete pulmonary nodule to mass lesion 2) diffuse interstitial granular infiltration 3) elevation of right hemidiaphragm or pleural effusion 4) hilar fullness 5) bony involvement. The fact that pulmonary metastasis might be the major presenting manifestation of primary hepatocellular carcinoma has been emphasized.