| 李涛,马林,梁丽.弥漫浸润性生长的WHOⅡ级星形细胞瘤的MR诊断[J].中国医学影像技术,2005,21(1):49~51 |
| 弥漫浸润性生长的WHOⅡ级星形细胞瘤的MR诊断 |
| MR diagnosis of WHO grade Ⅱ astrocytoma with diffuse infiltrating growth pattern |
| 投稿时间：2004-09-11 修订日期：2004-11-15 |
| DOI： |
| 中文关键词: 星形细胞瘤,弥漫型 磁共振成像 |
| 英文关键词:Astrocytoma, diffuse Magnetic resonance imaging |
| 基金项目: |
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| 中文摘要: |
| 目的探讨弥漫型星形细胞瘤的MR影像特点。方法 回顾性分析15例经病理证实的Ⅱ级弥漫型星形细胞瘤的MRI表现。结果 15例病例均表现为弥漫的等、长T1和长T2信号。额叶受累9例,颞叶受累9例,顶叶受累8例,海马受累5例,岛叶受累5例,基底节区受累6例,丘脑受累5例,脑干受累5例,胼胝体受累6例。增强扫描大部分病变无强化,5例患者局部有结节状的强化。结论 MRI能清楚地显示病变的范围和特点,具有重要的诊断和鉴别诊断价值。 |
| 英文摘要: |
| Objective To investigate the MR imaging features of diffuse astrocytoma. Methods MR studies of 15 patients with pathologically confirmed grade Ⅱ diffuse astrocytomas were reviewed retrospectively. Results The tumors showed diffusely infiltrated isointensity or low signal on T1WI and high signal on T2WI in all 15 cases. Frontal lobe was involved in 9 cases, temporal lobe in 9 cases, parietal lobe in 8 cases, hippocampus in 5 cases, insular lobe in 5 cases, basal ganglion in 6 cases, thalamus in 5 cases, brain stem in 5 cases, and corpus callosum in 6 cases. Most lesions showed no enhancement after Gd-DTPA administration, but nodular enhancement was seen in 5 cases. Conclusion MRI can clearly detect the extent and feature of the diffuse astrocytoma and should be the first modality of choice in showing the tumor spectrum, and it has significant clinical value in the diagnosis and differential diagnosis. |
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