Cerebral spinal fluid fistulas of the anterior skull base lend themselves to an endoscopic approach.Dissection begins with a meticulous anterior and posterior ethmoidectomy.

• 前颅底的脑脊液漏可以在鼻内窥镜下进行处理，先小心翼翼的进行前后筛窦组切除术，以暴露筛顶全长。