摘要
目的探讨颅内不典型血管母细胞瘤的MRI表现,以提高其诊断准确率。方法回顾性分析11例经手术及病理证实的颅内不典型血管母细胞瘤患者的临床、病理及MRI资料。结果单发8例,多发3例,共有血管母细胞瘤病灶17个,其中单发者均位于幕下,多发者1例部分位于幕上;6个病灶为实性,10个为囊实性,1个为大囊小结节;瘤周多为中-重度水肿;T1WI上呈等至稍低信号,T2WI上为等至稍高信号;增强扫描实性部分均明显强化,2个病灶囊变区部分强化呈小环形或"尾征";5个病灶周围见血管流空影;2个见"脑膜尾征"。结论颅内不典型血管母细胞瘤的MRI表现多样,结合患者发病部位、年龄及MRI信号特点,能提高该病术前诊断准确率。
Objective To analyze MRI features of atypical intracranial hemangioblastoma. Methods MR findings and clinical data of 11 patients with hemangioblastoma proved by pathology were retrospectively analyzed. Results A total of 17 intracranial hemangioblastomas were found （3 cases had multiple lesions）. All the solitary lesions were located infrat- entorial and one of multiple lesions was partly located supratentorial. According to MR characteristics, the tumors were di- vided into three types： solid type （6 lesions）, cystic solid type （10 lesions） and big cyst with small mural nodule type （1 lesion）. Most of lesions had moderate to severe peritumoural edema. All the tumors showed heterogeneous hypo or isointen- sity on T~ WI, isointensity or hyperintensity on T2WI. The solid part of tumors showed obviously enhancement with sharp edge, and the cystic part of 2 lesions showed partly enhancement like a ring or ＂tail sign＂, the ＂flow void＂ phenomenon of vessels were found clearly in 5 lesions, and ＂dural tail sign＂ were detected in 2 lesions. Conclusion Atypical intracrani- al hemangioblastoma had variation of MRI features. MRI findings combined with location and age can help to make correctdiagnosis.
出处
《临床放射学杂志》
CSCD
北大核心
2014年第6期833-837,共5页
Journal of Clinical Radiology
关键词
血管母细胞瘤
颅内
不典型
磁共振成像
Hemangioblastoma intracranial Atypical Magnetic resonance imaging
