PFTs assessing forced ital capacity (FC), forced expiratory olume (FE1), and total lung capacity (TLC) were obtained prospectiely before and 2 years after surgery.

• 包括最大通气量（FC),用力呼气容量(FE1)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。