The dead Angle is the frontal wall near with the open window, and a little inferior wall.
视野死角主要为临近开窗口的前壁以及小部分的内侧壁。
The anterior skull base tumors were resected by craniofacial approach through posterior wall of frontal sinus.
累及前颅底者采用经额窦后壁入路的颅面联合手术切除方法；
The anterior skull base tumors were resected by craniofacial approach through posterior wall of frontal sinus.
累及前颅底者采用经额窦后壁入路的颅面联合手术切除方法；
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