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经不同手术入路应用显微外科技术切除鞍区脑膜瘤３５例。按术中是否需要脑牵拉与脑组织的直观反应，将手术显露程度分四级。Ⅰ级：肿瘤自然显露，毋须脑牵拉便将肿瘤切除１２例，占３４．３％；Ⅱ级：对脑间断性略加牵拉，去牵拉后，局部外观与未牵拉部无异１７例，占４８．６％；Ⅲ级：牵拉处脑组织有伤痕３例，占８．６％；Ⅳ好：脑损伤较明显或呈不同程度的肿胀３例，占８．６％。全组Ⅱ～Ⅰ级显露２９例，占８２．９％，以经眶颧额颞下入路切除鞍旁脑膜瘤时最多见。本显露程度分级可作为衡量颅底肿瘤手术方法是否合理的一项指标。
35 cases of sellar meningiomas were removed by microsurgical techniques after different surgical approaches. According to the intraoperative need for brain traction and visual reaction of the brain tissue, the surgery revealed the level of four. Grade Ⅰ: The tumor naturally revealed that the tumor was removed without brain stretch in 12 cases, accounting for 34.3%; Ⅱ grade: a slight stretch on the brain intermittent, to stretch, the local appearance and no stretch is no different 17 cases, accounting for 48.6%; Grade Ⅲ: 3 cases of traumatic brain tissue injury, accounting for 8.6%; Ⅳ good: more obvious brain injury or swelling in varying degrees in 3 cases, accounting for 8.6%. The whole group Ⅱ ~ Ⅰ grade revealed 29 cases, accounting for 82.9%, by the frontotemporal orbital frontotemporal approach to remove the parasellar meningiomas most common. The degree of disclosure can be used as a measure of the surgical method of skull base tumor is a reasonable indicator.