鞍旁海绵状血管瘤的MRI诊断

MRI diagnosis of parasellar cavernous hemangioma

目的分析鞍旁海绵状血管瘤(PCH)的MRI表现与特征,探讨MRI对该病的诊断价值。方法回顾性分析9例PCH的临床资料,所有病例均行MRI平扫及增强扫描。结果 PCH位于鞍旁,体积较大,并不同程度伸入到蝶鞍内,外形不规则,瘤周无水肿。T1WI呈稍低信号,T2WI呈高信号,FLAIR较高信号,DWI为等或稍低信号,ADC图呈高信号。1 H-MRS表现5例无NNA峰、Cho峰和Cr峰,4例可见较低的Cho峰、NAA峰及Lip峰。增强扫描延迟明显异常强化。结论 PCH具有特征性的MRI表现,MRI对PCH的诊断及鉴别诊断具有重要价值。

Objective To analyze MRI of Parasellar Cavernous Hemangioma （PCH） and to evaluate its diagnostic value of this disease. Methods We retrospectively analyzed the clinical data of 9 patients with PCH, all cases were performed unenhanced and enhanced MRI. Results PCH was mainly located in the parasellar, which had big volume and involved in sella with different extent. PCH showed abnormality in shape without peripheral edema. The lesions were demonstrated as slightly hypointensity on T1 WI and hyperintensity on T2 WI and remarkably hyperintensity on FLAIR, and iso or slightly hypointensity on DWI, and remarkably hyperintensity on ADC（9 cases）. There were 5 cases without NAA wave, Cho wave and Cr wave on 1 H-MRS. 4 cases had little lower Cho wave, NAA wave and Lip wave. In MRI delayed enhancement scan, PCH was enhanced remarkably. Conclusion PCH has characteristic MRI features, which are important in the diag- nosis and differentiated diagnosis of PCH.