作者报告在358例垂体肿瘤与240例视交叉蛛网膜炎患者中,有6例为蝶鞍内蛛网膜囊肿,均诊断为垂体瘤而进行了手术。术中于鞍内见充满无色液体,有半透明薄壁的囊肿。垂体窝明显扩大,同时鞍膈或其成分常缺如,在鞍结节及前床突区囊肿之前部直接与周围蛛网膜相连。蛛网膜囊肿充满蝶鞍并向鞍上扩展,其上极可突出于前床突上3～10毫米,且由视交叉向前延伸。视神经明显向测方移位,视交叉有不同程度的变形,且 The authors reported that in 358 patients with pituitary tumors and 240 patients with parachiasmatic arachnoiditis, 6 patients had intranasal arachnoid cysts and were diagnosed as pituitary tumors. Intraoperative see full of colorless liquid in the saddle, there are translucent thin-walled cysts. The pituitary fossa was significantly enlarged, and saddle pupa or its components were often absent, and were directly connected with the surrounding arachnoid membrane in front of saddle tubercle and anterior cyst cyst. The arachnoid cyst is filled with a sella extending to the upper part of the saddle. The upper part of the arachnoid cyst can protrude 3-10 mm above the anterior cranial process and extends forward from the optic chiasm. The optic nerve is obviously shifted to the measurement side, and the optic chiasm has different degrees of deformation, and