中枢神经系统血管外皮细胞瘤的磁共振成像表现回顾性分析
Journal of Xinxiang Medical University(2013)
Abstract
目的总结中枢神经系统血管外皮细胞瘤的磁共振成像(MRI)表现。方法回顾性分析经手术后病理证实的9例中枢神经系统血管外皮细胞瘤的MRI影像资料。结果 7例位于颅内脑外,1例位于侧脑室三角区内,1例位于髓外硬膜内。MRI上,4例(44.4%)呈类圆形或椭圆形结节、团块,5例(55.6%)呈分叶状团块。T1WI上,5例(55.6%)呈与脑白质等信号的稍短T1信号,3例(33.3%)呈与脑灰质等信号的等T1信号,1例与灰质对比呈稍长T1信号。T2WI上,8例(88.9%)呈与脑灰质等信号的T2信号,1例呈稍长T2信号;6例(66.7%)伴囊变;8例(88.9%)与脑膜或脊膜相连,5例(55.6%)以宽基底相连,3例(33.3%)以窄基底相连;5例(55.6%)伴流空血管影;增强后9例均有不均匀明显强化,囊变坏死区无强化,4例(44.4%)有典型脑膜尾征;7例(77.8%)颅内病灶伴轻度水肿,2例伴骨质破坏。9例患者最终均通过病理确诊。结论中枢神经系统血管外皮细胞瘤的MRI表现具有一定特征性,最终诊断需依靠病理。
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Key words
diagnosis,magnetic resonance imaging,hemangiopericytoma
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