A técnica endoscópica endonasal no diagnóstico de lesões da base do crânio: A propósito de um cordoma do clivus

The endonasal endoscopic technique is widely used in diagnosis and treatment of multiple nasosinusal pathology, but also a viable alternative to the conventional biopsy approaches to the skull base. According to the previous literature, the success rates are comparable or even better than the neurosurgical approaches, with lower morbidity, when performed by skilled surgeons and with a careful pre-operatory study. This study presents a clinical case of a neoplastic lesion of the clivus, accessed endoscopically, which biopsy revealed a chordoma, the most frequent intrinsic tumor of this skull base area.