颅内海绵状血管瘤的病理及MR特征

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.

Pathology and MR Features of Intracranial Cavernous Hemangioma

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 intracerebral 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 T2WI.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.