Cristiana Coimbra1, André Cunha2, Edite Coimbra Ferreira3, Artur Condé4. 1. ENT Resident at CHGE, Rua professor Rodolfo de Abreu 299, C63, 4150-467 Porto, Portugal. Electronic address: cfilipa.coimbra@gmail.com. 2. Neuroradiologist residente at CHGE, Portugal. 3. ENT Assistant at CHGE, Portugal. 4. ENT Department Director at CHGE, Portugal.