目的：比较传统扩张器扩张疗法与放置覆膜可回收食管支架疗法治疗食管术后吻合口良性狭窄的疗效、生物相容性和安全性。
OBJECTIVE: to compare the efficacy, biocompatibility and safety of traditional dilator therapy versus retrievable esophageal covered stent therapy in the treatment of benign esophageal stenosis.
目的：比较传统扩张器扩张疗法与放置覆膜可回收食管支架疗法治疗食管术后吻合口良性狭窄的疗效、生物相容性和安全性。
OBJECTIVE: to compare the efficacy, biocompatibility and safety of traditional dilator therapy versus retrievable esophageal covered stent therapy in the treatment of benign esophageal stenosis.
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