支气管肺癌的生长当积累到十亿个细胞时,一般已达到其生活期的四分之三阶段。此时肿瘤的直径为1厘米,仅在条件良好的 X 光片中或偶然的机会才被发现。一些未被 X 光发现的支气管肺癌,其潜伏期可达七年以上,其中部份是处于真正的肿瘤早期阶段。即原位癌(in situ)阶段。肿瘤的生长尚末穿过基层粘膜,若及时处理其治愈率基本达100%。过去曾报告原位性肺癌15例,本文另报告8例。由于采用支气管纤维镜(支纤镜)检 The growth of bronchial lung cancer, when accumulated to one billion cells, has generally reached three quarters of its life cycle. At this time, the tumor was 1 cm in diameter and was found only in occasional x-rays or by chance. Some bronchial lung cancers that have not been discovered by X-ray have a latency period of more than seven years. Some of them are in the early stages of real tumors. That is, the in situ stage. The growth of the tumor does not pass through the primary mucosa yet, and the cure rate is basically 100% if treated in time. In the past, 15 cases of in situ lung cancer have been reported, and 8 cases have been reported in this article. Due to the use of bronchial fiberscopes