Pneumothorax and pulmonary hemorrhage were associated with the length of the needle cutting through the air lung.Pneumothorax was associated with pneumonectasia and location of the lesions.

• 气胸与出血的发生与穿刺针通过含气肺组织的长度成正相关，气胸的发生与患者肺气肿的存在和2次穿刺相关，位于肺野内带的病灶较中、外带病灶更易发生出血。