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食管失弛缓症(Achalasia of Esophagus)曾被称为贲门痉挛症(Cardiospasm)、食管痉挛症(Esophagospasm;Hoffman,1733年)。1874年Zenker与Ziemsen氏等收集18例尸解报告,指出本病的病理特征是贲门狭窄,其上的食管则异常扩张。1922年Jackson氏发现,本病食管狭窄的部位在横膈水平;尸解证实系膈孔过紧。本病发病率占人口的0.6～2.0/10万,是一种少见疾病。其地理分布以欧美、非洲、高加索、印度等地为多。食管失弛缓症的治疗在国内尚未见报告。1717年Valsalva氏最初描述环咽肌
Achalasia of Esophagus has been referred to as Cardiospasm, esophagospasm (Hoffman, 1733). 1874 Zenker and Ziemsen’s collection of 18 cases of autopsy reported that the pathological features of this disease is cardia stenosis, the upper esophagus is abnormal expansion. 1922 Jackson found that the site of esophageal stenosis in the diaphragmatic level; autopsy confirmed that the Department of the diaphragm is too tight. The incidence of this disease accounts for 0.6 to 2.0 / 100,000 population, is a rare disease. Its geographical distribution to Europe and the United States, Africa, the Caucasus, India and more. Esophageal achalasia treatment has not been reported in the country. 1717 Valsalva’s initial description of the ring pharyngeal muscle