“空泡蝶鞍”（ｅｍｐｔｙｓｅｌａ；ＥＳ）一词于１９４９年出现在英语文献中，１９５１年Ｂｕｓｃｈ［１］正式命名。不论鞍窝是否扩大，一般认为只要蛛网膜下腔疝入鞍内即为ＥＳ。如果ＥＳ发生在鞍膈先天缺损或其它无明显原因的情况时，称为原发性（或称特发性）ＥＳ；... The term “emptysela (ES)” appeared in English in 1949 and was officially named Busch [1] in 1951. Regardless of whether the expansion of saddle, generally considered as long as the subarachnoid hernia into the saddle that is ES. ES is called primary (or idiopathic) ES if it occurs in the first case of a birth defect in the saddle diaphragm or in other cases without obvious cause;