@article{moreira_santos_cintra_2017,  title={Perineural spread of malignant head and neck tumors: review of the literature and analysis of cases treated at a teaching hospital},  volume={50},  ISSN={0100-3984},  url={https://doi.org/10.1590/0100-3984.2015.0215},  DOI={10.1590/0100-3984.2015.0215},  number={5},  journal={Radiologia Brasileira},  publisher={Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem},  author={Moreira, Mauro César Silveira and Santos, Antonio Carlos dos and Cintra, Murilo Bicudo},  year={2017},  month={Sep},  pages={323–327} }