The effect of CT to diagnose the giant bulla is superior to X ray radiography, can help to forecast the lung function of the postoperation, and select the proper treatmetn methods. [

• CT诊断巨大肺大泡的效果明显优于胸部X线平片,可对手术能否改善肺功能作出预测,从而避免不必要的手术治疗。