Biphenotypic Sinonasal Sarcoma: A Series of Six Cases with Evaluation of the Clinicopathological Characteristics and Prognosis - Herrera, Luis; Nascimento, Antonio Geraldo Do; Silveira, Paula Angelica Lorenzon; Costas, Felipe D'almeida; Toledo, Ronaldo Nunes; Lacerda, Débora; Pinto, Clóvis Antonio Lopes; Kowalski, Luiz Paulo (Journal of Neurological Surgery Part B: Skull Base, 2019)