Objective: To evaluate the clinical therapeutic outcome of former and late interventional techniques for benign and malignant high esophageal stenosis.
目的：评价高位良恶性食管狭窄介入治疗的临床效果，探讨新的介入治疗方法的治疗效果。
Objective To study treatment methods of high position of esophageal stenosis with self-expanding metal stent.
目的研究记忆合金自体膨胀支架，治疗高位食管狭窄的方法和措施。
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