幕上中枢神经系统胚胎源性肿瘤NOS型的MRI分析  

MRI features of supratentorial CNS embryonal tumor,NOS

作　　者：杨凤[1] 郑小勇[1] 马卫波 潘初[2] 陈唯唯[2] 朱文珍[2] 

机构地区：[1]华中科技大学附属同济黄州区人民医院放射科,湖北黄冈438000 [2]华中科技大学同济医学院附属同济医院放射科,湖北武汉430000

出　　处：《影像诊断与介入放射学》2016年第6期476-481,共6页Diagnostic Imaging & Interventional Radiology

基　　金：湖北省自然科学基金(2014CFB150;2014CFB292)

摘　　要：目的分析探讨中枢神经系统胚胎源性肿瘤,NOS(CNS embryonal tumour,not otherwise specified)的MRI影像特点,以提高对本病的认识。方法回顾性分析14例经手术及病理证实的幕上中枢神经系统胚胎源性肿瘤,NOS型的MRI及临床、病理资料并复习文献。结果所有病例均为单发,8例累及两个以上的脑叶;9例直径大于5 cm,平均直径5.4 cm;灶周水肿表现为较轻(5/14),甚至无(5/14);病灶呈囊实性多见(12/14);5例可见到多囊结构,形成所谓"肠襻"状改变;在T_1WI(10/14)、T_2WI(11/14)图像上信号混杂,流空(5/14)与出血(6/14)信号较常见;增强后呈花环状或结节中重度强化(13/14)。结论幕上中枢神经系统胚胎源性肿瘤NOS临床、病理及影像学特点可参照CNS PNET的临床、病理及影像学特点,MRI表现具有体积大、信号混杂等特点,有助于其诊断与鉴别。Objective To explore the MRI features of supratentorial central nervous system（CNS） embryonal tumor, not otherwise specified（NOS）. Methods MRI of 14 patients with pathologically confirmed supratentorial CNS embryonal tumor, NOS was analyzed retrospectively. Results All tumors were solitary with 8 involving the bilateral cerebral hemispheres. The average diameter of the tumors was 5.4 cm with 9 tumors 5 cm. There was mass effect without（5）, with slight（5） or marked（4） peritumoral edema. Mixed solid and cystic lesions were more common（12） with multiple cysts in 5 patients. The signal intensities were heterogeneous on T_1-（10） and T_2-（11） weighted images with flow voids（5）, hemorrhage（6）, ring or nodular enhancement（13）.Conclusion Characteristic MRI features may suggest the diagnosis of CNS embryonal tumor, NOS.

关 键 词：中枢神经系统胚胎源性肿瘤NOS型 脑肿瘤 磁共振成像 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]