Asawavichianginda S, Vaewvichit K, Taecholarn C
Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
J Med Assoc Thai. 1997 Sep;80(9):603-8.
The majority of cerebellopontine angle (CPA) tumors are acoustic neuromas (AN). However, an intracranial meningioma may occur at this site and will produce symptoms similar to an AN. The most common presenting symptoms of CPA meningiomas are hearing loss, tinnitus, dizziness and dysequilibrium. It cannot be easily distinquished from an AN only on the history and physical examination. Even with an audiogram, evoked response audiometry (ERA) and vestibular function tests, it still cannot be distinquished. CT scan and MRI are helpful in differentiating these two tumors radiographically. In this article, we report two cases of CPA meningiomas which presented with otologic symptoms. The diagnosis and treatment of CPA meningioma is discussed.
大多数桥小脑角（CPA）肿瘤是听神经瘤（AN）。然而，颅内脑膜瘤也可能发生在这个部位，并会产生与听神经瘤相似的症状。CPA脑膜瘤最常见的症状是听力丧失、耳鸣、头晕和平衡失调。仅根据病史和体格检查很难将其与听神经瘤区分开来。即使进行听力图、诱发反应测听法（ERA）和前庭功能测试，仍然无法区分。CT扫描和MRI有助于在影像学上鉴别这两种肿瘤。在本文中，我们报告了两例表现为耳科症状的CPA脑膜瘤病例。并对CPA脑膜瘤的诊断和治疗进行了讨论。
