摘要
目的:探讨Ⅱ、Ⅲ级颅内脑室外室管膜瘤(Intracranial extraventricular ependymoma,IEE)MR影像特点,提高术前肿瘤诊断及分级的准确率。方法:回顾性分析经手术病理证实的8例IEE的临床资料、MR影像表现、病理特点。结果:8例IEE均为单发病灶,额叶2例,颞叶1例,枕叶3例,枕顶叶1例,颞枕叶1例;其中Ⅱ级IEE 4例,Ⅲ级IEE 4例。病灶囊性为主型5例,实性为主型病灶3例。Ⅱ级IEE中仅1例为囊性为主型,4例Ⅲ级IEE全为囊性为主型。钙化仅见于Ⅱ级IEE(3例),而瘤旁或瘤内出血仅见于Ⅲ级IEE(2例)。Ⅱ级和Ⅲ级IEE均可见瘤内流空血管及瘤内强化血管影。实质为主型及囊性为主型病灶中的实质部分呈明显不均匀强化。囊性为主型病灶囊壁呈环状或花环状强化,囊性成分内部分可见斑片状轻度强化。结论:IEE在常规磁共振扫描上具有一定的影像特征,结合临床资料,能提高术前诊断及分级的准确性。
Objective:To investigate the MR imaging features of intracranial extraventricular ependymoma(IEE)of gradeⅡandⅢ,and to improve the accuracy of preoperative diagnosis and classification of tumors.Methods:The clinical data,MR imaging and pathological features of 8 cases of IEE confirmed by operation and pathology were retrospectively analyzed.Results:Single lesion was found in each case,2 cases were in frontal lobe,1 case in temporal lobe,3 cases in occipital lobe,1 case in parieto-occipital lobe and 1 case in temporal-occipital lobe,of which 4 cases were gradeⅡand 4 cases were gradeⅢ.Five were mainly cystic lesions and 3 were mainly solid lesions.Only 1 case of gradeⅡIEE was cystic,and 4 cases of gradeⅢIEE were cystic.Intratumoral calcifications were only found in gradeⅡcases(n=3).Peritumoral or intratumoral hemorrhage was only found in gradeⅢcases(n=2).Intratumoral flow-empty vessels and intratumoral enhanced vessels were seen in both gradeⅡand gradeⅢcases.Solid lesions and solid component in cystic lesions showed markedly inhomogeneous enhancement.The cystic walls showed ring enhancement,parts of cystic components demonstrated patchy mild enhancement.Conclusion:IEE has certain imaging features on conventional MRI.Combining with clinical data,it can improve the accuracy of preoperative diagnosis and classification.
作者
向超
张灿
邹文辉
柴长柱
宋继华
鲁际
XIANG Chao;ZHANG Can;ZOU Wen-hui;CHAI Chang-zhu;SONG Ji-hua;LU Ji(Department of Radiology,The First College of Clinical Medical Science,ChinaThree Gorges Universtiy &Yichang Central People’s Hospital,Yichang Hubei 443000,China)
出处
《中国临床医学影像杂志》
CAS
2019年第9期609-612,628,共5页
Journal of China Clinic Medical Imaging
关键词
室管膜瘤
脑肿瘤
磁共振成像
Ependymoma
Brain neoplasms
Magnetic resonance imaging
