GALAGALI, J. R.; SINGH, R.; KUMAR, S. Isolated sphenoid polyp: a cause of headache. International Journal of Otorhinolaryngology and Head and Neck Surgery, [S. l.], v. 5, n. 1, p. 228–230, 2018. DOI: 10.18203/issn.2454-5929.ijohns20185323. Disponível em: https://www.ijorl.com/index.php/ijorl/article/view/1221. Acesso em: 23 apr. 2025.