肺癌病人初诊时大多数已进入Ⅲ、Ⅵ期,约80%在确诊时已无手术条件。在手术病例中,术后五年生存率为25～30%,Ⅰ期肺癌的术后五年生存率可达60～70%,其中肿瘤最大直径为3厘米或更小,局部淋巴结和远处无转移者在80%以上;肿瘤直径在2厘米以卞或肿瘤局限于支气管壁层内者,则高达90%,甚至可永久性治愈。因此,早期 Most of the lung cancer patients have entered Phase III and VI at the time of initial diagnosis, and about 80% have no surgical condition at the time of diagnosis. In surgical cases, the 5-year survival rate is 25 to 30% after surgery. The 5-year survival rate of stage I lung cancer can reach 60 to 70%. The maximum tumor diameter is 3 cm or less, and the regional lymph nodes and distances are distant. More than 80% of non-metastasis patients have tumors whose diameter is 2 cm or their tumors are confined to the bronchial wall. Up to 90% of them may be cured permanently. So early