共查询到19条相似文献,搜索用时 109 毫秒
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中枢神经细胞瘤是中枢神经系统少见的肿瘤,1982年Hassoun等[1]首次报道.它绝大多数位于脑室内,最常见的部位是靠近透明隔和Monro氏孔区,少数可位于第三脑室或第四脑室[2-3].而发生于脑室外的中枢神经细胞瘤(extraventricular neurocytoma,EVN)非常少见. 相似文献
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【摘要】 目的:分析第三脑室中枢神经细胞瘤(CNC)的MRI表现,提高对该病的认识和诊断水平。方法:回顾性分析经手术病理证实的6例第三脑室CNC的MRI表现,扫描序列包括T1-FLAIR、T2-FLAIR、T2WI、DWI和Gd-DTPA增强扫描。结果:6例肿瘤均位于第三脑室内,呈类圆形或椭圆形实性肿块,边界清楚,呈长T1、长T2信号,部分肿瘤内部信号不均、呈蜂窝状,增强扫描示肿瘤呈均匀或不均匀明显强化。侧脑室有不同程度积水。结论:位于第三脑室类圆形或椭圆形肿瘤,边界清,MRI平扫呈长T1、长T2信号,增强扫描呈明显强化者,应考虑到中枢神经细胞瘤的可能。 相似文献
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中枢神经细胞瘤一例 总被引:2,自引:0,他引:2
患者 女 ,2 8岁。 3个月前无明显诱因出现头痛不适 ,有时伴耳鸣、视物模糊。无恶心、呕吐 ,无肢体感觉活动障碍。查体 :神志清 ,GLS 15分。双瞳孔对光反射灵敏 ,四肢肌张力基本正常 ,病理反射未引出。CT扫描 :左侧脑室前部示一不规则略高密度灶 ,密度不均 ,形态不整 ,边缘呈绳索状 ,境界清楚 ,约 3.2cm× 3.0cm×3.0cm大小 ;增强扫描呈中度不均匀强化 ,左侧脑室扩大 (图1、2 )。MRI示 :颅脑矢状位T1WI,轴位T1WI、PDWI、T2 WI见左侧脑室体部一分叶状高低混杂信号肿块 ,室间隔受压右移 ,左侧脑室三角区扩大 ,左侧… 相似文献
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患者女,50岁,6个月前无明显诱因出现右侧肢体活动不利。于当地医院行头颅 CT 拟诊为左额叶囊性占位。为求进一步诊治来本院就诊。行 MRI平扫及增强检查。MRI平扫示左侧额叶见囊实性混杂信号,大小约5.2 cm×3.6 cm×5.2 cm,囊内呈长 T1 WI 长 T2 WI 均匀信号,稍长 T1 WI 稍长 T2 WI 实性信号位于病灶周边,似壁结节(图1,2),大小约3.1 cm×2.3 cm×1.4 cm,DWI呈高信号,边缘可见点状血管流空低信号(图3,4)。病灶周围可见环形长T1 WI长T2 WI水肿信号。增强示实性成分、囊壁明显强化(图5~7)。影像诊断:胶质瘤可能性大。 相似文献
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脑室内中枢神经细胞瘤的电镜观察 总被引:1,自引:0,他引:1
中枢神经细胞瘤是来源于神经元的脑肿瘤,临床较为少见,主要好发于脑室内或室管膜下区。本文介绍了8例脑室内神经细胞瘤超微形态学研究结果。CT及MRI神经影像学检查有明确的脑室内占位,肿瘤组织光学显微镜检查酷似少突胶质细胞瘤,细胞为圆形,大小相对一致,核周有明显空晕,钙化多见。电镜下的超微结构特点主要表现为瘤细胞胞质内有丰富的多聚核糖体、平行微管、发育较好的高尔基复合体以及由丰富的细胞突起组成的神经毡样结构,特别是非典型突触的形成及突触内大量清亮的及有致密核心的神经分泌颗粒,这些结构都显示了神经细胞分化的形态特征。本文还结合文献讨论了该肿瘤的诊断及治疗。 相似文献
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The authors report a case of intraventricular tumor. The tumor was initially misdiagnosed as an oligodendroglioma but later proved to be a central neurocytoma. The imaging and histopathological features are reviewed. The immunopositivity allows a diagnosis of neurocytoma. Prognosis is favorable following total surgical resection, with low recurrence rate. 相似文献
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Central neurocytoma arising in the third ventricle 总被引:2,自引:1,他引:1
A central neurocytoma confined to the third ventricle and presenting clinically as subarachnoid haemorrhage is reported.
Received: 14 November 1995 Accepted: 17 June 1996 相似文献
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Toshiyuki Ohtani Akio Takahashi Fumiaki Honda Shogo Ishiuchi Hideyuki Kurihara Tomio Inoue Yoichi Nakazato Tomio Sasaki 《Annals of nuclear medicine》2001,15(2):161-165
Central neurocytoma is a benign neuronal tumor with a favorable prognosis. This tumor is typically characterized by decreased uptake of 18F-fluorodeoxy glucose (FDG) and any increased uptake of FDG in patients suffering from this tumor would be highly unusual. A case of central neurocytoma with an intense FDG uptake, combined with atypical histopathological features and a high proliferation index is reported in this paper. A 45-year-old male had a two months' history of right hemiweakness. Magnetic resonance (MR) imaging showed a large tumor in the right lateral ventricle. Positron emission tomography (PET) with FDG revealed high glucose metabolism in the tumor. The histological diagnosis was central neurocytoma with atypical features characterized by microvascular proliferation. The MIB-1 labeling index, ordinarily smaller than 2.0%, was 7.0%. Conventional radiotherapy, with a total dose of 50 Gy, was administered after the surgical treatment. The patient returned to his normal daily activities after the cessation of radiation therapy. 相似文献