儿童视网膜母细胞瘤伴脑脊液种植转移的MRI表现(附6例分析)  

MRI manifestations of children retinoblastoma accompanied with spinal pia mater implantation metastasis

作　　者：程春[1] 杨友林[1] 梁晓航[1] 李小丘[1] 

机构地区：[1]空军航空医学研究所附属医院放射科,北京100089

出　　处：《放射学实践》2012年第7期796-798,共3页Radiologic Practice

摘　　要：目的:探讨儿童视网膜母细胞瘤(RB)伴脊髓脑脊液种植转移的MRI表现及其诊断价值。方法:对6例经手术病理证实的儿童RB的CT及MRI资料进行回顾性分析。结果:6例中1例为双侧,5例为单侧。6例均行MRI检查发现软脊膜转移,其中2例合并脊髓受侵,表现为软脊膜呈弥漫性、不均匀结节状增厚,马尾、终丝明显增厚、聚集,肿块填充椎管。讨论:RB的MRI表现具有一定特征性。MRI可清楚显示脊髓脑脊液种植转移的范围、信号特征及与脊髓的关系,对RB的分期、治疗和预后具有重要意义。Objective：To discuss the MRI findings and the value of MRI in the diagnosis of children retinoblastoma （RB） accompanied with spinal pia mater implantation metastasis. Methods： The MRI materials of 6 cases with pathology proven RB were retrospectively analyzed. Results：Of the 6 cases, there were bilateral lesions （n= 1） and the rest were unilateral. All 6 cases showed implantation metastases of spinal pia mater on MRI, 2 of them had spinal cord invasion, showing diffuse,uneven nodular thickening of the pia mater, obvious thickening of cauda equina and filum terminale, and the spinal canal was filled by tumor. Conclusion： There were certain MRI characteristic findings of RB. The extent, signal intensity characteristics of implantation metastasis and their relationship with spinal cord could be clearly displayed on MRI,which is significant for the staging,treatment planning and prognosis prediction of RB.

关 键 词：儿童 磁共振成像 视网膜母细胞瘤 肿瘤转移 脊髓 脑脊液 

分 类 号：R739.7[医药卫生—肿瘤]