经迷路手术切除肿瘤时,血液、骨粉、坏死组织等污染了脑脊液,影响其吸收,致使瞬间脑脊液压力增高,表现为无症状、头痛或脑脊液漏。由于颞骨岩部缺陷,经迷路切除肿瘤后,有18％以上的患者将并发脑脊液耳漏及耳鼻漏。听神经瘤经迷路切除之后,脑脊液漏有两个途径,一是从颞骨缺陷通过皮肤切口,二是从咽鼓管通过鼻咽,其发病率在4％至18％之间。手术时,去除外耳道骨部后壁、外耳道 After the excision of the tumor, the blood, bone meal, necrotic tissue and the like contaminate the cerebrospinal fluid and affect its absorption, resulting in an instant increase in cerebrospinal fluid pressure, which manifests as asymptomatic, headache or cerebrospinal fluid leakage. Due to defects in the petrous bone and petrous department, more than 18% of patients with cerebrospinal fluid otorrhea and otorhinolaryngology will be complicated by excision of the tumor. Acoustic neuroma after labyngectomy, cerebrospinal fluid leakage in two ways, one from the temporal bone defect through the skin incision, the second is from the eustachian tube through the nasopharynx, the incidence of 4% to 18%. Surgery, removal of the posterior wall of the external auditory meatus, external auditory canal