Purely Endoscopic Endonasal Resection for Sinonasal Malignant Tumor with Intracranial Extension—Our Experience - Liu, Quan; Wang, Dehui; Yu, Hongmeng; Zhao, Weidong; Li, Huabin; Gu, Yurong; Li, Houyong (Journal of Neurological Surgery Part B: Skull Base, 2019)