肺癌是常见的肿瘤,发病率逐年提高,肺癌早期无明显症状,即是出现咳嗽,咯血、胸痛等症状,亦不是肺癌所特有,近年来随着X线,CT及纤维支气管镜检查手段的不断发展,但对肺癌的诊断仍有困难,特别是周边型肺癌,误诊仍有存在,有的作者报 Lung cancer is a common type of cancer. The incidence rate is increasing year by year. There are no obvious symptoms in early stage of lung cancer, ie cough, hemoptysis, and chest pain. It is also not unique to lung cancer. In recent years, X-ray, CT, and fiberoptic bronchoscopy have been used continuously. Development, but there are still difficulties in the diagnosis of lung cancer, especially peripheral type lung cancer, misdiagnosis still exists, some authors reported