Guerreiro I, Branquinho F, Portugal E, Manchón R, Silva R, Guimarães A, Pereira JH. Primitive neuroectodermic tumor: case report. Port J ORL [Internet]. 2010 Jun. 27 [cited 2025 Apr. 4];48(2):93-5. Available from: https://journalsporl.com/index.php/sporl/article/view/2465