Abstract：
Anterior skull base lesions could be reached by different approaches (subfrontal, pterional, interhemispheric, etc.). In selected cases, the frontal trans-sinusal approach is an effective alternative to conventional techniques.
We present our technique to perform a frontal trans-sinusal approach in a patient affected by a large olfactory groove meningioma.
The frontal trans-sinusal approach allows to approach safely lesions of the median anterior cranial fossa. This approach provides lower brain retraction, easier access to olfactory grooves, and earlier tumor devascularization. However, it remains limited to patients with large-sized frontal sinuses and entails some postoperative risks such as mucocele or CSF leak.
We present our technique to perform a frontal trans-sinusal approach in a patient affected by a large olfactory groove meningioma.
The frontal trans-sinusal approach allows to approach safely lesions of the median anterior cranial fossa. This approach provides lower brain retraction, easier access to olfactory grooves, and earlier tumor devascularization. However, it remains limited to patients with large-sized frontal sinuses and entails some postoperative risks such as mucocele or CSF leak.
摘要：
背景：可以通过不同的方法到达前颅底病变（额下，翼点,半球间,等。).在某些情况下，额叶经窦方法是传统技术的有效替代方法。
方法：我们介绍了我们的技术，该技术可在患有大型嗅沟脑膜瘤的患者中进行额叶经鼻窦入路。
结论：额叶经鼻窦入路可以安全地入路正中前颅窝的病变。这种方法提供了较低的大脑收缩，更容易接近嗅觉凹槽，和早期的肿瘤血管离断术.然而,它仍然限于大型额窦患者,并带来一些术后风险,如黏液囊肿或脑脊液漏.
方法：我们介绍了我们的技术，该技术可在患有大型嗅沟脑膜瘤的患者中进行额叶经鼻窦入路。
结论：额叶经鼻窦入路可以安全地入路正中前颅窝的病变。这种方法提供了较低的大脑收缩，更容易接近嗅觉凹槽，和早期的肿瘤血管离断术.然而,它仍然限于大型额窦患者,并带来一些术后风险,如黏液囊肿或脑脊液漏.
