马尾神经区肿瘤MR诊断探讨【论文】
马尾神经区肿瘤MR诊断探讨
马尾神经区肿瘤MR诊断探讨
【关键词】
马尾神经 摘要:
目的:
探讨马尾神经区肿瘤MR的
表
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现特征,提高MR影像诊断及鉴别诊断水平。方法:
分析
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经病理或临床证实确诊的50例马尾神经区肿瘤的MR表现特征。结果:
脂肪瘤15例中12例合并先天畸形,2例可见马尾被包绕,2例无规律,3例MRM旋转呈矢状位可见蛛网膜下腔于一侧受压变窄。神经鞘瘤13例中有10例有囊变,增强扫描实质部分强化明显;2例马尾神经鞘MRM旋转观察示肿瘤上、下方的“脑脊液柱”里“杯口”状截断。神经纤维瘤7例中3例多发,肿瘤T1WI呈等或低信号,T2WI呈等或稍高信号。室管膜瘤5例,T1WI呈等或稍高信号,T2WI呈高信号,1例有囊变。脊膜瘤4例增强扫描呈明显强化,其中1例可见“脊膜尾征”,马尾显示欠佳。多发转移瘤2例MRM中示马尾神经区多发充盈缺损。胆脂瘤,副神经节瘤,淋巴瘤及血管瘤各1例,其中胆瘤无强化。结论:
MR可清晰显示马尾神经区肿瘤的形态、MR信号特征、与马尾神经的关系及马尾的各种变化,对其诊断的鉴别诊断有较高价值。 关键词:椎管肿瘤;马尾;磁共振成像 Exploration the Diagnosis of MR of Cauda Tumors Equina HUANG Xun, WU Che-fu,XIE Qun-xian Abstrat:
Objetive:
In order to improve dingnosti abilit,the MR imaging finding of auda tumors ere studied. Method:
50 pathologiall liniall onfirmed ases of tumors in the auda area ere examined ith MR imaging. Results:
Lipoma ourred in 15 ases of our series of patients and 12
ases out of the 15 shoed ongenited defet of various kinds simultaneousl,lipoma enlosed the auda equina in 2 ases,MRM demonstrated extradural lipoma in 3 ases .Among 13 ases of neurinoma there as sti formatoin 10 ases ,onstrast-enhaned images sho that the tumas as intensivel homogenos ith rim enhanement,MRM demonstrated the intradural
neurinomas appeared as filling defet and ere sharpl outline b erebrospinal fluid in 2ases .7ase of neurofribroma ere found and there multiple lesions in 3 ase .The tumor mass shoed hpointense on T1WI and hper or isointense on T2WI. There ere 5 ases of ependmoma ,Ependmoma of the filum shoed homogenous hperintense as sligntl hperintense on T2WI.There as sti formation in the mass of one ase of ependmoma.There ere 4 ases of meningioma .The tumor mass shoed homogenous enhanement after ontrast enhaned sanning and meningeal tail sign as found in one ase.MRM shoed multiple small intradural extramedullar nodules in the auda epuina shoing filling defets sharpl out-line b CSF in 2 ases .one ase of hemangioblastoma shoed iso intense on T1WI and hperintense of T2WI relative to CSF.and it exhibited hemogenous enhanement after Gd-DTPA injetion. In addition,one ase of paraganioma and lmphoma and holesteation ith MR features as found. Conlusion:
The imaging of MR is a ver valuable method for the diagnosis and differental diagnosis of tumor in the auda equina.