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回顾2017年9月—2019年12月间13例经气囊辅助小肠镜治疗深部小肠良性狭窄患者的临床资料，评估不同病变狭窄特点、内镜治疗效果及安全性。结果显示，13例患者中克罗恩病6例，隐源性多灶性溃疡性狭窄性小肠炎(cryptogenic multifocal ulcerous stenosing enteritis，CMUSE)4例，病因未明小肠狭窄3例。17次小肠镜治疗共发现狭窄38处，35处为膜状狭窄，3处为柱状狭窄。6例克罗恩病患者共发现13处狭窄，其中4例单处狭窄，1例3处狭窄，1例6处狭窄。4例CMUSE患者共发现21处狭窄，均为膜状狭窄。共对镜下所见狭窄行18次球囊扩张，10次IT刀切开，技术成功率88.2%(15/17)，临床有效率76.9%(10/13)。随访3～28个月，有1例患者行外科手术治疗。术后1例迟发性出血，3例迟发性穿孔，均经对症治疗好转。表明经小肠镜治疗深部小肠良性狭窄在技术上可行，能在短期内改善患者症状。“,”To review the clinical data of 13 patients with benign stenosis in deep small intestine treated by balloon-assisted enteroscopy from September 2017 to December 2019, and to evaluate the stenosis characteristics, endoscopic treatment effects and its safety in different lesions. The results showed that there were 6 cases of Crohn disease (CD), 4 cases of cryptogenic multifocal ulcerative stenosing enteritis (CMUSE) and 3 cases of small bowel stenosis with unknown etiology. A total of 38 stenoses were found after 17 enteroscopic treatments, including 35 web-like stenoses and 3 columnar stenoses. Thirteen stenoses were found in 6 patients with CD, including 4 single stenosis, 1 case of 3 stenoses and 1 case of 6 stenoses. Twenty-one stenoses were found in 4 patients with CMUSE and they were all web-like stenosis. A total of 18 times of balloon dilatation and 10 times of IT knife incision were performed. The technical success rate was 88.2% (15/17), and the clinical effective rate was 76.9% (10/13). The follow-up time was 3-28 months, and one patient underwent surgical treatment. There was 1 case of delayed hemorrhage and 3 cases of delayed perforation after operation. They were all improved by medical treatment. These results indicated that treatment of benign stenosis in deep small intestine by enteroscopy is technically feasible and can improve the symptoms of patients in a short time.