颅内髓母细胞瘤术后播散 MRI表现  

Intracranial medulloblastoma：MR imaging appearances of spread of post-operation

作　　者：周振江[1] 孙胜军[2] 高培毅[2] 

机构地区：[1]连云港市中医院影像科,江苏连云港222004 [2]首都医科大学附属北京天坛医院神经影像中心

出　　处：《实用放射学杂志》2012年第8期1266-1269,共4页Journal of Practical Radiology

摘　　要：分析颅内髓母细胞瘤（medulloblastoma,MB）术后复发播散的MRI特征,为临床治疗及估计预后提供参考。方法 回顾性分析48例颅内MB术后复发播散患者的临床及影像资料。结果 颅内MB术后播散,MRI表现为线状增厚型35例（72.9%）,结节型40例（83.3%）,呈单发或多发结节,肿块型14例（29%）,弥漫性柔脑膜强化型4例（8.3%）。增强扫描所有病例均发现线状增厚、结节状或团块状强化。21例（43.7%）出现不同程度的脑积水征象。结论 颅内MB术后易发生复发播散,MRI增强扫描对诊断、治疗、术后随访及估计预后提供有价值的信息。Objective To analyze the MRI characteristics of post operative spread of intracranial medulloblastoma （medulloblas toma, MB）, so that to provide the evidences for clinical treatment and evaluating prognosis. Methods Clinical and MR imaging data of 48 cases of post operative medulloblastoma with brain spread were retrospectively analysed. Results MR imaging findings of spread of medulloblastoma post-operatively included linear thickening type in 35 cases （ 72.9% ） , nodular type in 40 cases （ 83.3% ） , single or muhiple nodules, mass type in 14 cases （29%）,and diffuse leptomeninges enhancement in 4 cases （8. 3%）. Contrast-on hanced scanning showed that the linear, nodular or massive lesions all enhanced. 21 cases （43.7%） combined with different degree of hydrocephalus signs. Conclusion Intracranial medulloblastoma is apt to happen recurrence post operatively. Contrast-enhanced MR imaging can provide the inforrnations for diagnosis, treatment, and post-operative follow-up and estimating the prognosis.

关 键 词：脑 髓母细胞瘤 肿瘤播散 磁共振成像 

分 类 号：R739.41[医药卫生—肿瘤]