桥脑小脑角区肿瘤96例磁共振诊断分析

目的 探讨桥脑小脑角区常见肿瘤的特征性MRI表现,以提高桥小脑角区肿瘤的影像诊断准确率.方法 回顾性分析96例经手术和病理证实的桥脑小脑角区肿瘤,其中听神经瘤55例,脑膜瘤20例,胆脂瘤9例,三叉神经瘤鞘瘤7例,海绵状血管瘤3例,蛛网膜囊肿2例.均行增强MRI扫描,总结MRI表现特征.结果 发生于桥脑小脑角区的肿瘤听神经瘤占首位,其次为脑膜瘤、胆脂瘤、三叉神经鞘瘤、海绵状血管瘤、蛛网膜囊肿等,该区肿瘤大多具有较特征性的影像学表现,术前定位准确率100%,定性准确率为94.7%.结论 MRI是检查桥脑小脑角区肿瘤的首选检查方法,对桥脑小脑角区肿瘤的诊断和鉴别诊断具有重要价值.

Abstract：

Objective To improve the preoperative diagnosis accuracy of cerebellopontine angle tumors through analyzing MRI findings. Methods Ninety-six cases with cerebellopontine angle tumors, confirmed by pathology and surgery, were collected and underwent MRI scan plus enhanced MRI. Among the 96 capes, we observed acoustic neurinoma in 55 cases, meningioma in 20 cases, cholesteatoma in 9 cases, trigeminal neuroma in 7 cases,cavernous hemangioma in 3 cases,arachnoid cyst in 2 cases. The MRI characteristics of all cases were analyzed retrospectively. Results The chief type of tumor happened in the cerebellopontine angle zone was acoustic neurinoma,followed in order by meningioma,cholesteatoma,trigeminal neuroma,cavernous hemangioma and arachnoid cyst. The accuracy of preoperative localization and qualitative diagnosis were 100% and 94.7%respectively.Conclusion MRI has a high value in the diagnosis and differential diagnosis of cerebellopontine angle tumors,which can be used as a preferred preoperative examination method in cerebellopontine angle tumors.

Diagnosis value of MRI to cerebellopontine angle tumor: analysis of 96 cases

Objective To improve the preoperative diagnosis accuracy of cerebellopontine angle tumors through analyzing MRI findings. Methods Ninety-six cases with cerebellopontine angle tumors, confirmed by pathology and surgery, were collected and underwent MRI scan plus enhanced MRI. Among the 96 capes, we observed acoustic neurinoma in 55 cases, meningioma in 20 cases, cholesteatoma in 9 cases, trigeminal neuroma in 7 cases,cavernous hemangioma in 3 cases,arachnoid cyst in 2 cases. The MRI characteristics of all cases were analyzed retrospectively. Results The chief type of tumor happened in the cerebellopontine angle zone was acoustic neurinoma,followed in order by meningioma,cholesteatoma,trigeminal neuroma,cavernous hemangioma and arachnoid cyst. The accuracy of preoperative localization and qualitative diagnosis were 100% and 94.7%respectively.Conclusion MRI has a high value in the diagnosis and differential diagnosis of cerebellopontine angle tumors,which can be used as a preferred preoperative examination method in cerebellopontine angle tumors.