桥小脑角(CPA)和内听道(IAC)的脂肪瘤是相对罕见的肿瘤。听神经瘤是该部位最常见的肿瘤,这通常会导致听力损失,眩晕,还有耳鸣.偶尔,这个肿瘤压迫脑干,提示手术切除。该区域的脂肪瘤可能引起类似于神经瘤的症状。然而,他们不考虑手术治疗,因为他们的移除可能会导致几个额外的缺陷。CPA/IAC脂肪瘤的保守治疗和重复磁共振成像检查是保留颅神经功能的标准措施。在这里,我们报告了一个听神经瘤和CPA脂肪瘤同侧相互靠近的病例。主要症状为听力损失,无面神经麻痹。因此,必须避免面部神经损伤。考虑到肿瘤之间的解剖关系,颅神经,和CPA/IAC脂肪瘤,我们对听神经瘤进行了全手术切除.我们故意不治疗脂肪瘤,能保护面神经.该报告可能为今后类似病例的鉴别诊断提供有益参考。
Lipomas of the cerebellopontine angle (CPA) and internal auditory canal (IAC) are relatively rare tumors. Acoustic
neurinoma is the most common tumor in this location, which often causes hearing loss, vertigo, and tinnitus. Occasionally, this tumor compresses the brainstem, prompting surgical resection. Lipomas in this area may cause symptoms similar to
neurinoma. However, they are not considered for surgical treatment because their removal may result in several additional deficits. Conservative therapy and repeated magnetic resonance imaging examinations for CPA/IAC lipomas are standard measures for preserving cranial nerve function. Herein, we report a case of acoustic
neurinoma and CPA lipoma occurring in close proximity to each other ipsilaterally. The main symptom was hearing loss without facial nerve paralysis. Therefore, facial nerve injury had to be avoided. Considering the anatomical relationships among the tumors, cranial nerves, and CPA/IAC lipoma, we performed total surgical removal of the acoustic
neurinoma. We intentionally left the lipoma untreated, which enabled facial nerve preservation. This report may be a useful reference for the differential diagnosis of similar cases in the future.