Cancer in the process of growing up the one hand, administration extended the bronchial wall and penetrated through the bronchial wall adjacent lung tissue mass, Meanwhile penetrate causing bronchial stenosis or occlusion.

• 癌肿在成长过程中一方面治支气管壁延伸扩展，并穿越支气管壁侵入邻近肺组织形成肿块，同时突入支气管内造成管腔狭窄或阻塞。