This is a two-arm, parallel-group randomized clinical trial. Routine perioperative care would be performed in volunteers with primary early lung cancer. The study will enroll approximately 300 volunteers to compare the progression-free or overall survival in patients undergoing video-assisted thoracoscopic surgery (VATS) for primary lung tumors between propofol and sevoflurane for the maintenance of anesthesia.
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Overall survival
Timeframe: From the date of surgery until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 36 months
The presence of disease progression
Timeframe: From the date of surgery until the date of first documented progression (recurrence or metastasis),assessed up to 36 months