脊索样脑膜瘤的常规及功能MRI诊断  

Conventional and Functional MRI in Diagnosis of Chordoid Meningioma

作　　者：许丽凤 张哲 皮厚山 许尚文 陈自谦 XU Li-feng;ZHANG Zhe;PI Hou-shan;XU Shang-wen;CHEN Zi-qian(Department of Radiology,the 900th Hospital of Joint Logistics Support Force,Fuzhou 350025,Fujian Province,China)

机构地区：[1]联勤保障部队第900医院放射诊断科,福建福州350025

出　　处：《中国CT和MRI杂志》2023年第12期35-37,共3页Chinese Journal of CT and MRI

基　　金：常规磁共振阴性内侧颞叶癫痫的多模态功能磁共振的临床研究(2019J01524)。

摘　　要：目的分析脊索样脑膜瘤的常规及功能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9例经病理证实的脊索样脑膜瘤的临床、常规及功能MRI及病理资料。结果9例患者中,男性5例,女性4例,年龄16-72岁,平均年龄(45±7.4)岁,3例病灶位于鞍上,2位于桥小脑角区,1例位于侧脑室,3例位于额颞部;9例均为实性病灶,T2WI呈不均匀高信号,DWI病灶呈等及略低信号,增强扫描明显不均匀强化,2例可见脑膜尾征;PWI病灶均呈相对高灌注;MRS病灶Cho峰升高,NAA峰缺失或显著下降。结论脊索样脑膜瘤的MRI表现具有一定的特征性,综合分析病灶的常规及功能MRI表现,可提高本病的术前诊断水平。Objective To analyze the conventional and functional MRI findings of chordoid meningioma and to compare with pathology in order to improve the understanding and preoperative diagnosis of the disease.Methods The clinical,the conventional and functional MRI,and pathological data of 9 cases of chordoidmeni ngioma confirmed by surgery and pathology were retrospectively analyzed.Results Of the 9 patients,5 were male and 4 were female,aged 17-72 years,with an average age of(45±7.4)years.3 cases were located in suprasellar region,2 cases in cerebellopontine angle region,1 case in lateral ventricle,3 cases in frontotemporal region.9 cases were solid lesions,with uneven high signal intensity on T2WI and slightly low signal intensity on DWI.The enhancement scan showed significant uneven enhancement,and 2 cases showed meningeal tail sign;PWI lesions showed relatively high perfusion;The Cho peak of MRS lesions increases,while the NAA peak is missing or significantly decreased.Conclusion The MRI manifestations of chordoid meningioma have certain characteristics.Comprehensive analysis of conventional and functional MRI manifestations of the lesion can improve the preoperative diagnostic level.

关 键 词：脊索样脑膜瘤 功能磁共振 磁共振成像 

分 类 号：R739.45[医药卫生—肿瘤] R445.2[医药卫生—临床医学]