Reis C, Gameiro dos Santos J, Figueirinhas R, Feliciano T, Ramos C, Pires M, Almeida e Sousa C. Intranasal endoscopy diagnosing skull base pathology: A case of clivus chordoma. Port J ORL [Internet]. 2011 Dec. 28 [cited 2025 Apr. 4];49(4):293-7. Available from: https://journalsporl.com/index.php/sporl/article/view/2541