Objective To explore the effect and survival time by setting covered metallic expansible-self stents to treat postradiation esophago-tracheal fistula.
探索放置金属带膜自膨式
疗放疗后
管气管瘘
及生存时间。
任务；（stent复数）三单形式）Objective To explore the effect and survival time by setting covered metallic expansible-self stents to treat postradiation esophago-tracheal fistula.
探索放置金属带膜自膨式疗放疗后管气管瘘及生存时间。
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