原发性空蝶鞍(Primary empty sella)指由于鞍隔缺损,蛛网膜下腔向鞍内囊状扩展,并占据鞍内大部而言.其结果使垂体受压,垂体窝呈现空虚状态。该症尸检发生率为5.1%。多数空蝶鞍无临床症状,而原发性空蝶鞍伴有视力、视野改变、头痛、内分泌紊乱,则称为原发性空蝶 Primary empty sella refers to the saccular extension of the subarachnoid space into the saddle due to a saddle septal defect, and it occupies most of the internal saddle. As a result, the pituitary is compressed and the pituitary fossa is empty. The incidence of autopsy was 5.1%. Most of the empty sella have no clinical symptoms, but the primary empty sella with visual acuity, visual field changes, headache, and endocrine disorders are called primary empty butterflies.