Morphological evaluation of thyroid cartilage invasion in early glottic tumors involving the anterior commissure - Sava, Henrique Wendling; Dedivitis, Rogerio Aparecido; Gameiro, Gustavo Rosa; Pfuetzenreiter, Elio Gilberto; Almeida, Ricardo Camillo de; Matos, Leandro Luongo; Cernea, Claudio Roberto (Orl-journal for oto-rhino-laryngology head and neck surgery, 2018)