食管贲门良、恶性狭窄临床较为多见,药物治疗往往难于奏效,外科手术有时患者又无法耐受,且复发率及并发症较高。随着内镜下治疗技术的进一步完善,大多数良性狭窄的药物治疗已为内镜下治疗所替代,一些不适宜手术治疗的恶性狭窄,内镜下治疗也可缓解症状,延长寿命,有利于采取其他? Esophageal and cardiac stenosis is clinically more common, and drug treatment is often difficult to achieve. Sometimes patients are unable to tolerate surgery, and the recurrence rate and complications are high. With the further improvement of endoscopic treatment technology, most of the benign stenosis drug treatment has been replaced by endoscopic treatment. Some malignant stenosis is not suitable for surgical treatment. Endoscopic treatment can also relieve symptoms and prolong life. Take other?