| 于春水,李坤成,杨小平,李大胜,赵欣.四肢软组织神经源性肿瘤的MRI诊断[J].中国医学影像技术,2003,19(9): |
| 四肢软组织神经源性肿瘤的MRI诊断 |
| MRI Evaluation of Neurogenic Tumor of Soft Tissue in the Extremities |
| 投稿时间：2003-04-26 |
| DOI： |
| 中文关键词: 神经源性肿瘤 软组织 磁共振成像 |
| 英文关键词:Neurogenic tumor Soft tissue Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨四肢软组织神经源性肿瘤的MRI诊断价值。方法 回顾性分析13例由病理证实的四肢软组织神经源性肿瘤的MRI表现。结果 神经鞘瘤8例,神经纤维瘤2例,恶性神经鞘瘤3例。神经源性肿瘤多表现为卵圆形或梭形(9/13),边界清楚(13/13),与周围神经关系密切(10/13),T1WI为均匀等信号(8/13),T2WI为不均匀高信号(13/13),Gd-DTPA增强后不均匀明显强化(13/13)。结论 结合肿瘤的形状、信号及与周围神经毗邻等特点,提示软组织神经源性肿瘤,而肿瘤大小、形状、信号均匀度、有无囊变,以及强化特点等有助于良、恶性的鉴别。 |
| 英文摘要: |
| Objective To investigate the diagnostic value of MRI in neurogenic tumor of soft tissue in the extremities. Methods The MRI appearance of thirteen neurogenic tumors with pathological confirmation was retrospectively analyzed. Results The study population consisted of 8 schwannomas, 2 neurofibromas and 3 malignant schwannomas. Neurogenic tumors usually presented as ovoid or fusiform masses with well-defined margins, and had close relationship to peripheral nerves. Compared to the signal intensity of the muscle, they often showed homogeneous equal signal intensity in T1WI and inhomogeneous high signal intensity in T2WI. All cases showed inhomogeneous marked enhancement after the injection of Gd-DTPA. Conclusion Based on the characteristics of the shape, signal features, and adjoining nerve, the diagnosis of neurogenic tumor can be suggested. Nevertheless, the shape and size of tumors, the degree of the signal homogeneity, the presence of cysts, and the enhancement features were useful indexes in differentiating benign from malignant tumors. |
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