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对５０具成人头颅标本采用经鼻外筛－蝶窦进路解剖观察的方法，测量了从Ｄａｃｒｙｏｎ点至上视结节，前鼻棘至上视结节及下视结节至蝶窦骨性开口外缘中点的距离分别为３６６８ｍｍ、６９３３ｍｍ及８０２ｍｍ。后筛窦以Ⅰ°最多（４９％），蝶上筛房占１５％。蝶窦气化良好组占７２％。筛后神经血管束行于最后筛房前壁者占２７７３％。行于最后筛房内者占３９５０％，行于蝶筛隔板内者占３２７７％。作者认为经鼻外筛－蝶窦进路比经中隔进路路线距离短，术野广等优点外，了解后筛窦、蝶窦的气化发育情况及神经血管束走行情况对选择手术进路有一定的指导意义。
Fifty adult skull specimens were examined by transsphenoidal approach-sphenoid sinus approach and measured from Dacryon point to superior nodule, anterior nasal spine to superior nodule and inferior nodule to sphenoid osseous opening The distance between the edge of the center were 36 68mm, 69 33mm and 8 02mm. Posterior ethmoid sinus I ° (49%), butterfly on the screen room accounted for 15%. Sphenoid sinus gas well group accounted for 72%. After the screening of nerve vessels in the last line of the anterior wall sieve accounted for 27 73%. Line in the final screen room accounted for 39 50%, line in the butterfly screen partition accounted for 32 77%. The authors believe that the nasal sieve - sphenoid sinus approach than the route through the septum is short, wide field of surgery and other advantages, to understand the posterior ethmoid sinus sphenoid development and neurovascular bundle walking on the choice of surgery Road has some guiding significance.