天津医药

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侧脑室室管膜下瘤MRI表现及临床分析

杨来华1,张宗军2   

  1. 1. 江苏省丹阳市中医院
    2. 南京军区南京总医院
  • 收稿日期:2013-09-27 修回日期:2013-12-02 出版日期:2014-04-15 发布日期:2014-04-15
  • 通讯作者: 张宗军

MRI Appearances and Clinical Analysis of Lateral Ventricular Subependymomas

1,   

  • Received:2013-09-27 Revised:2013-12-02 Published:2014-04-15 Online:2014-04-15

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摘要：  【摘要】目的 分析侧脑室室管膜下瘤的MRI影像学表现，以提高对本病MRI征象的认识。方法 对2007年1 月—2013年6月6例经手术病理证实的室管膜下瘤患者的临床和影像学资料进行回顾性分析。结果 6例患者中，男4例，女2例，主要表现为头痛、头昏；病灶位于右侧脑室3例，左侧脑室2例，双侧脑室前部1例；和脑白质相比肿瘤 T1WI呈等或稍低信号，T2WI呈稍高信号，DWI呈等或稍低信号，T2WI-FLAIR呈高信号；增强扫描：大部分病灶无强化或轻度强化；磁共振波谱（MRS）：符合良性肿瘤波谱特征，表现为NAA峰轻度降低，Cho峰正常。结论 侧脑室室管膜下瘤MRI表现具有一定的特征性，MRI多方位成像可对肿瘤明确定位，并有助于定性诊断。

关键词: 神经胶质瘤, 室管膜下, 脑肿瘤, 磁共振成像, 体层摄影术

Abstract:

[Abstract] Objective Analysis of MRI image of lateral ventricular subependymomas to improve our recognition of radiology manifestation of the disease.Methods Clinical data and MRI findings of6patients with subependymomas proved by surgical pathology, observed from January2007to June 2013, were analyzed retrospectively. Results Six patients (4 males and2females) presented with headache and dizziness. Among these 6patients, tumor developed in right lateral ventri? cle in three patients, in left lateral ventricle in2patients and in frontal of dual lateral ventricle in one patient. In MRI image, tumors showed iso- intense to hypointense to normal white matter on T1- weighted and DWI images, hyperintense on T2- weighted and FLAIR. Mild or no enhancement was noted in most cases. MRS showed findings consistent with low-grade tu? mor, with a normal choline peak and depressed N-acetyl-aspartate peak.Conclusion Lateral ventricular subependymo? mas have characteristic MRI features and multi-direction images are helpful for diagnosis.