Chest examination of leukemic patients we used to find several kinds af abnormal findings due to direct invasion of leukemic cell and other inflammatory process. This report was attempted to determine the statistics of pulmonary menifestations in leukemic patients visited Kyung-Pook National University Hospital since January 1970 to December 1977. Among 141 leukemic patients 53 cases showed abnormal chest X-ray findings. Age distribution of patients was between 10 to 30 and male was predominant for 1.8 to 1 and type of leukemia were respectively as follows; lymphatic type 43.3%, acute myelocytic 31.9%, monocytic type 16.3% and others. In chest X-ray findings grannular to nodular (35.9%) and infiltrative change (27.6%) were found in addition to simple enlargement of hilar nodes (32.1%).