颅内海绵状血管瘤的病理及MR特征

Pathology and MR Features of Intracranial Cavernous Hemangioma

目的:结合颅内海绵状血管瘤的病理特征,分析其MRI影像学表现。方法:搜集颅内海绵状血管瘤共53例,其中脑内型40例,脑外型13例,全部病例均行MRI检查。结果:脑内型海绵状血管瘤MRI大多表现为爆米花样或桑椹状的混杂信号灶,周边围以低信号环;脑外型T1WI表现为均匀低信号,T2WI为高信号,增强扫描明显强化。结论:不同类型的颅内海绵状血管瘤具有不同的病理学特点,导致其MRI表现的不同,其手术方案及预后亦有很大差异。利用MRI检查术前可做出准确诊断,从而指导手术方案的制订。

Objective： To analyze the MR findings of intracranial cavernous hemangioma combined with pathologic features, Methods： 53 cases of intracranial cavernous hemangioma were collected and studied. Among them,40 cases were in tracerebral cavernous hemangiomas and 13 cases were extracerebral cavernous hemangioma. All the cases were examined by MRI. Results..Intracerebral cavernous hemangiomas generally showed popcorn- and mulberry-like mixed signals with ring- like low signal on MRI; Extracerebral cavernous hemangiomas showed homogenous low signal on T1WI and high intense signal on T2 WI. After injecting contrast medium, the tumor signals were enhanced markedly. Conclusion： The different types intracranial cavernous hemangiomas have different pathologic features that result in different MR findings,leading to different operation plans and prognosis. As a result,the intracranial cavernous hemangioma can be diagnosed correctly by MR before operation which guides the operation plan.