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颅内孤立性纤维瘤的MRI表现

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摘要 目的 分析颅内孤立性纤维瘤(ISFT)的MRI表现.方法 对经临床手术病理证实的4例ISFT的MRI表现进行回顾性分析.结果 MRI影像显示4例均为不规则分叶状肿块,边界清;肿块均位于幕上,额顶部2例,额部跨中线1例,枕部跨中线1例.MRI平扫T1WI 4例均为等、略低信号为主,其中1例内见新月形高信号;2例T2WI以长T2信号为主,2例T2WI内见稍高、低混杂信号影,形成“阴阳”征;4例肿块FLAIR均呈等高低混杂信号影.增强扫描4例肿块均呈不均匀明显强化,其中2例低T2信号区明显强化,肿块内部坏死区未见强化;3例未见“脑膜尾征”,1例见“脑膜尾征”.结论 颅内ISFT的MRI表现虽有一定特性,但定性诊断较困难,最终需要病理学检查确诊.
出处 《中国医师杂志》 CAS 2015年第2期283-284,共2页 Journal of Chinese Physician
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