Endonasal endoscopic surgery is a team surgery according to Snyderman et al., which requires learning of non-familiar surgical anatomy, use of new technologies and the development of new surgical skills. The major concerns during surgery are the identification of the internal carotid artery, optic nerves and preservation of small cerebral vessels. The potential for a disaster is great if the surgeon is unfamiliar with the anatomy, there is a lack of adequate equipment and clumsiness to maintain adequate visibility with the endoscope. Many publications speak on the subject, both on transsphenoidal endoscopic anatomy, and on anatomy with the approach by extending its limits.