一、绪言:肺癌在欧美已成为发病率最高的癌肿之一,在日本按癌发病数的演变来看,几年后将取代胃癌成为死亡率最高的肿瘤。目前,除早期肺癌根治切除的病例外,治愈率是低的。由于对周围型肺癌读片力的提高,中心型肺癌咳痰细胞诊断的普及、支气管纤维内窥镜的发展等,近年早期发现率正在逐步提高。即使早期发现,一些病例由于发生部位(特别是中心型肺癌)及其他原因也不能切除、或即使能切除也常造成患者肺机能严重低下,对于这样病例已应用激光治疗。在早期中心型肺癌中,也有少数病例胸部X 线检查阴性,痰细胞学检查阳性,支气 I. INTRODUCTION: Lung cancer has become one of the highest cancer rates in Europe and the United States. In Japan, the number of cancer incidences will replace gastric cancer as the highest mortality rate in a few years. At present, the cure rate is low except for cases of radical resection of early lung cancer. Due to the increase in the reading power of peripheral lung cancer, the diagnosis of central lung cancer cough cells, and the development of bronchial fiber endoscopes, early detection rates have gradually increased in recent years. Even with early detection, some cases can not be removed because of the site of occurrence (especially central lung cancer) and other reasons, or even if they can be removed, they often cause the patient’s lung function to be severely lowered. Laser treatment has been applied to such cases. In the early stage of central lung cancer, there are also a few cases of negative chest X-ray examination, sputum cytology positive, qi