本文通过127例周围型肺癌(鳞癌60、腺癌40,未分化癌27例)的X线病理对照研究,以寻找鳞状上皮细胞癌、腺癌(包括细枝气管肺泡癌)与未分化癌(包括小细胞与大细胞癌)的主要X线鉴别指标。而后,用数学模型——最大似然法(Maxium likelihood method)进行计算,使之数量化;为 This article through 127 cases of peripheral lung cancer (squamous cell carcinoma 60, adenocarcinoma 40, 27 cases of undifferentiated carcinoma) X-ray pathology study to find squamous cell carcinoma, adenocarcinoma (including bronchial airway alveolar carcinoma) and undifferentiated The main X-ray discriminator of cancer (including small cell and large cell carcinoma). Then, using a mathematical model, the Maximian likelihood method, the calculation is performed to quantify it;