TY - JOUR T1 - Preoperative computed tomography evaluation of the paranasal sinuses: what should the physician know? - pictorial essay JO - Radiologia Brasileira A1 - Ribeiro, Bruno Niemeyer de Freitas A1 - Muniz, Bernardo Carvalho A1 - Marchiori, Edson SN - 0100-3984 UL - 10.1590/0100-3984.2017.0082 VL - 52 Y1 - 2019 PB - Brazil ER -