MRI在不同级别多形性黄色星形细胞瘤中的诊断价值  

The Diagnostic Value of MRI in Different Grades of PXA

作　　者：廖应泳 邓凯吉 齐兴峰 许尚文 廖晓琴 段小玲 LIAO Ying-yong;DENG Kai-ji;QI Xing-feng;XU Shang-wen;LIAO Xiao-qin;DUAN Xiao-ling(Department of Radiological Diagnosis,The 900th Hospital of the Joint Logistic Support Force,Fuzhou 350000,Fujian Province,China;Department of Radiological Diagnosis,The Union Hospital Affiliated to Fujian Medical University,Fuzhou 350000,Fujian Province,China;Department of Cardiothoracic Surgery,The Union Hospital Affiliated to Fujian Medical University,Fuzhou 350000,Fujian Province,China;Department of Pathology,The 900th Hospital of the Joint Logistic Support Force,Fuzhou 350000,Fujian Province,China)

机构地区：[1]联勤保障部队第九〇〇医院放射诊断科,福建福州350000 [2]福建医科大学附属协和医院放射诊断科,福建福州350000 [3]联勤保障部队第九〇〇医院病理科,福建福州350000 [4]福建医科大学附属协和医院心胸外科,福建福州350000

出　　处：《中国CT和MRI杂志》2022年第11期11-13,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：目的探讨多形性黄色星形细胞瘤(PXA)的MRI影像特征,以提高MRI诊断水平。方法总结24例经手术病理证实的PXA患者MRI影像表现,将PXA分成WHOⅡ级组与WHOⅢ组,在年龄、性别、形态、实性部分或壁结节强化程度、瘤周水肿程度、临近软脑膜是否强化与Cho/NAA比值进行统计学分析。结果17例WHOⅡ组与7例WHOⅢ组在性别、形态(囊性、囊实性、实性)、实性或壁结节强化程度及临近软脑膜是否强化方面无统计学意义(P﹥0.05),在年龄、瘤周水肿程度、1H-MRS检查中Cho/NAA比值有统计学意义(P﹤0.05)。结论PXA多发生在幕上脑浅表部位的囊实性病灶,有实性部分或壁结节强化及部分临近软脑膜强化特征,结合1H-MRS检查,有助于对PXA进行诊断分级。Objective To explore the MRI features of pleomorphic xanthoastrocytoma(PXA)in order to improve the level of MRI diagnosis.Methods The MRI imaging findings of 24 patients with PXA confirmed by surgery and pathology were summarized,and PXA was divided into WHO gradeⅡgroup and WHOⅢgroup.Whether the adjacent pia mater enhanced or not and the ratio of Cho/NAA were statistically analyzed.Results There were no significant differences in gender,morphology(cystic,cystic-solid,solid),enhancement degree of solid or parietal nodule,and enhancement of adjacent pia mater between 17 patients in WHOⅡgroup and 7 patients in WHOⅢgroup(P﹥0.05),the Cho/NAA ratio was statistically significant in age,degree of peritumoral edema,and 1H-MRS examination(P﹤0.05).Conclusion PXA mostly occurs in the superficial part of the supratentorial brain with cystic and solid lesions,with enhancement of solid parts or parietal nodules and enhancement of part of the adjacent pia mater.Combined with 1H-MRS examination,it is helpful for the diagnosis and grading of PXA.

关 键 词：多形性黄色星形细胞瘤 磁共振波谱技术 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]