面神经瘤误诊18例的回顾性分析

Objective To heighten the clinicians’ awareness of the facial nerve tumors.Methods Eighteen cases with facial nerve tumors were initially misdiagnosed,and these clinical data were reviewed retrospectively,including age,sex,presentations,hearing threshold,facial nerve function,facial electroneurography (ENoG),temporal bone CT and MRI findings,surgical approaches and postoperative histopathological examination.Results The 18 patients aged from 7 to 62 years with the average age of 43 years.Twelve cases were misdiagnosed as Bell′s palsy (66.7%),3 cases were misdiagnosed as cholesteatoma (16.7%),and the other 3 patients were diagnosed with space occupying lesion of the temporal bone,neoplasm of middle ear and parotid gland mass, respectively. The duration of patients underwent misdiagnosis ranged from 1 to 192 months,with the mean duration of 39 months.Facial paralysis and hearing loss were the most common presentations,which accounted for 77.8% and 66.7%,respectively.The presentations of tinnitus,otorrhea,spasm,otalgia and vertigo offen accured.In pathological type,16 cases of schwannomas (88.9%),1 case of hemangioma and 1 case