中枢神经细胞瘤的CT、MR影像特点及鉴别诊断(1)
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[摘要] 目的 探讨中枢神经细胞瘤的CT、MR影像特点及鉴别诊断方法。 方法 对32例经病理确诊为中枢神经细胞瘤的患者的临床资料进行回顾性分析，观察其CT、MR特征，并与病理诊断结果进行对比，统计其诊断准确率。 结果 中枢神经细胞瘤主要发生在透明隔、侧脑室壁、额叶、第四脑室、小脑蚓部、胼胝体内壁等实质组织中；特征性的表现为蜂窝状或丝瓜瓤样改变、或于侧脑室或胼胝体壁间见“索条”状牵拉影；CT表现为等信号或稍高信号，MR表现为等信号或稍低信号，增强扫描后可呈轻或中度强化；CT与病理诊断的符合率为56.25%，MR与病理诊断的符合率为75.00%。结论 中枢神经细胞瘤的发生位置、影像学表现具有一定特征性，需仔细进行分析，提高诊断准确率。
[关键词] 中枢神经细胞瘤；CT；磁共振；影像学特点；鉴别诊断
[中图分类号] R445 [文献标识码] A [文章编号] 1674-4721(2012)02(b)-0104-02
The CT, MR imaging characteristics and the differential diagnosis of central neurocytoma
YANG Jianbao
Shaoyang City Center Hospital of Hu'nan Province, Shaoyang 422000, China
[Abstract] Objective To discuss the CT, MR imaging characteristics and the differential diagnosis methods of central neurocytoma. Methods The 32 cases of central neurocytoma patients were diagnosed by pathologica, clinical data were retrospective analyzed, and observed the CT, MR characteristics, then compared to the pathological diagnosis results, statistical its diagnostic accuracy. Results CNC was mainly in the septum pellucidum, lateral ventricle wall, frontal lobe, the fourth ventricle, cerebellar vermis, corpus callosum wall and other essential organization; the performance were the honeycomb or towel gourd sample change, the "article cable" shape force shadow could been saw in the lateral ventricle or between the corpus callosum body, the equisignal signals or slightly higher signals was showed by CT, the equisignal signals or slightly lower signals was showed by MR, mild or moderate strengthening could showed by enhance scan, the CT and pathological diagnosis was 56.25%, MR and pathological diagnosis was 75.00%. Conclusion The imaging findings of central neurocytoma has certain characteristic, we should careful analysis, and to improve the diagnostic accuracy.
[Key words] Central neurocytoma; CT; MR; Imaging characteristics; Differential diagnosis
中枢神经细胞瘤(central neurocytoma，CNC)为颅内良性肿瘤，发病率较低，仅占中枢神经系统肿瘤发生率的0.1%～0.4%，临床较少见，20～35岁的青年人易发此病。由于本病的发病率较低，且早期症状较轻，容易被忽视和误诊，而CNC具有特殊的病理学特点，如能早期发现、早期治疗，则预后良好，所以CNC的诊断对患者极为重要[1-2]。CNC的主要检查和诊断方法为CT和MR检查，病理学检查可确诊，而术前诊断只能依靠CT和MR检查。笔者对2007年7月～2011年7月期间本院收治的经病理学确诊为CNC的32例患者的临床资料进行回顾性分析，分析并总结其CT和MR影像学表现和特点 ......
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