PFTs assessing forced vital capacity (FVC), forced expiratory volume (FEV1), and total lung capacity (TLC) were obtained prospectively before and 2 years after surgery.

• 包括最大通气量（FVC),用力呼气容量(FEV1)和肺总量（TLC)等在内的肺功能测试分别在术前和术后2年测试。