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咽憩室发生于咽下缩肌的甲咽斜肌和环咽横肌之间,其病因不详。Negus 认为生理性的环咽括约肌舒张不协调可导致憩室,这种不协调可为炎症或咽后壁感觉缺陷所致。Dunhill则提出质疑:如果括约肌不协调构成憩室形成因素的话,为什么憩室并不总是伴有吞咽障碍,他指出单纯切除憩室并不改善这种不协调,但术后复发者却很少。故认为先天性因素可能影响憩室的形成,并观察到一个家族中出现数个咽憩室患者。其他作者也有类似报告。Korkis设想先天性的下咽缩肌缺陷如同时伴有阻塞性
Pharyngeal diverticulum occurs in the pharyngeal hypopharyngeal hypopharynx and transverse pharyngeal muscle, its etiology is unknown. Negus that physiological discoordination of the cricoarytic sphincter can lead to diverticulum, this disharmony can be caused by inflammation or posterior pharyngeal sensory defects. Dunhill questioned why the diverticulum was not always associated with dysphagia if the sphincter was not coordinated to form a diverticulitis. He pointed out that simply removing the diverticulum did not improve the disharmony, but few postoperative recurrences. Therefore, congenital factors may affect the formation of diverticulum, and observed a family of patients with pharyngeal diverticulum. Other authors have similar reports. Korkis conceived of a congenital hypopharyngeal constriction with simultaneous obstruction