[CT diagnosis in primary lung cancer (a correlative study of roentgenogram CT, surgical and pathological findings)]

A correlative study of roentgenogram, CT, surgical and pathological findings was investigated on 40 cases with primary lung cancer to evaluate differences between x-ray and CT of the chest in imaging pathological changes of lung cancer. The study revealed that CT was more sensitive than roentgenogram in showing lobulation, speculate and internal structure of SPN or masses, hilar and mediastinal adenopathy, invasion to neighbouring tissues and soft tissues of chest wall and abnormal pattern of the bronchus in cross section. Abnormal findings in CT was 67.4% higher than that in roentgenogram, CT provided more information in diagnosis of primary lung cancer. Some limitations of CT in diagnosis of primary lung cancer were also discussed.