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目的：探讨眼震电图（ＥＮＧ）对诊断继发于桥小脑角胆脂瘤三叉神经痛的意义。方法：对６１例三叉神经痛患者进行术前系列ＥＮＧ和脑干电反应测听（ＡＢＲ）及颅脑ＣＴ检查。结果：源发性三叉神经痛患者３项检测均正常，而继发性尤其是对继发于桥小脑角胆脂瘤患者的检测可出现异常结果，以ＥＮＧ最为敏感。结论：在三叉神经痛型的桥小脑角胆脂瘤诊断中，ＥＮＧ是较敏感的检测方法。
Objective: To investigate the significance of electronystagmography (ENG) in diagnosing trigeminal neuralgia secondary to cerebellopontine cholesteatoma. Methods: Totally 61 patients with trigeminal neuralgia underwent preoperative series ENG and brainstem response audiometry (ABR) and brain CT examination. Results: All 3 patients with primary trigeminal neuralgia were normal. However, secondary results, especially for patients with cerebellopontine cholesteatoma secondary to cerebellopontine angle, showed abnormal results and were most sensitive to ENG. Conclusion: ENG is a sensitive detection method in the diagnosis of trigeminal neuralgia of cerebellopontine angle cholesteatoma.