Modified Trans-Sinusal Transglabellar Approach for Anterior Cranial Fossa Meningiomas: Technical Note and Literature Review.

 Currently, skull base surgery faces the dilemma of achieving the maximum possible tumor resection through less aggressive approaches and with minimal retraction of brain tissue. The objective of this work is to report a minimally invasive step-by-step approach to anterior cranial fossa tumors and to perform a literature review.  In our work, we describe a step-by-step approach, with images, which is a variation of the transglabellar approach.