脊索样胶质瘤MRI表现与病理对照分析

Chordoid Glioma:MRI Findings with Pathologic Correlations

目的旨在分析脊索样胶质瘤的MRI表现,并与病理对照,提高对本病的认识和术前诊断水平。方法回顾性分析联勤保障部队第九〇〇医院7例脊索样胶质瘤的临床、MRI及病理资料,并经手术病理证实。结果7例患者中,男性3例,女性4例,年龄27-56岁,平均年龄(41±9.2)岁,7例病灶均位于第三脑室前部至鞍上区,5例为完全实性,2例病灶主体呈实性伴病灶内多发小囊变区,增强扫描病灶囊变区不强化,实性部分显著强化并呈全瘤样强化改变,PWI病灶均呈高灌注,MRS病灶实性区Cho峰升高,NAA峰显著下降。结论脊索样胶质瘤的MRI表现具有一定的特征性,结合PWI及MRS表现,综合分析病灶的部位、信号及强化特征,可提高本病的术前诊断水平。

Objective To analyze the MRI findings of chordoid gliomas and to compare with pathology in order to improve the understanding and preoperative diagnosis of the disease.Methods The clinical,MRI,and pathological data of 7 cases of chordoid gliomas confirmed by surgery and pathology were retrospectively analyzed.Results Of the 7 patients,3 were male and 4 were female,aged 27-56 years,with an average age of(41±9.2)years.All of the 7 lesions were located from the anterior third ventricle to the suprasellar region,and 5 were completely solid.The main body of the lesions was solid with multiple small cystic areas at the edge of the lesion in 2 cases.On enhanced scan,the cystic areas of the lesions were not enhanced,while the solid parts showed significant enhancement like all tumors.PWI lesions showed high perfusion.The Cho peak in the solid area of the MRS lesions increased,and the NAA peak decreased.Conclusion MRI findings of chordoid gliomas have certain characteristics.Comprehensive analysis of lesion location,signal and enhancement features,ombined with the manifestations of PWI and MRS,the preoperative diagnosis of thie disease can be improved.