Analysis of the relationship between some features on chest CT with histopathology showed: lesions in the middle lobe of the right lung, lobulated margin or irregular with many spiculation, has a higher rate of lung cancer (p < 0.01), while lesions of 2 cm or less in size, sharp and smooth margins have a higher rate of benign tumors (p < 0.005); The rate of lung cancer increased escallatelly with the lesion size.