婴幼儿鞍区毛细胞黏液样型星形细胞瘤MRI表现

发布时间：2018-03-06 18:39

本文选题：婴幼儿　切入点：鞍区　出处：《临床放射学杂志》2017年02期 　论文类型：期刊论文

【摘要】：目的探讨婴幼儿鞍区毛细胞黏液样型星形细胞瘤(PMA)的MRI表现,提高其诊断水平。方法回顾性分析经手术病理证实的5例婴幼儿鞍区PMA的临床及MRI资料,总结不同MR序列病灶的信号特征。结果实质性病灶3例,囊实性病灶2例。病灶均边缘清楚,无明显瘤周水肿。脑积水2例。实质性病灶2例呈长T_1、长T_2信号,3例呈稍长T_1、稍长T_2信号,病灶内均见等T_1、等T_2条状或絮状信号,增强扫描均显著强化,其内见多发小点状或条状低信号。囊性病灶呈长T_1、长T_2信号,增强扫描囊壁明显强化。DWI上2例稍低信号,3例等信号;MRS病灶实质部分Cho/NAA、Cho/Cr升高,NAA/Cr降低。结论鞍区PMA好发于婴幼儿,病灶体积较大,以实质性病灶为主,周围水肿少见,DWI呈等低信号,增强扫描显著不均匀强化,内见多发小点状或条状低信号。MRS符合脑星形细胞瘤的波谱表现。
[Abstract]:Objective to investigate the MRI findings of hair cell myxoid astrocytoma (PMA) in the Sellar region of infants and to improve its diagnostic level. Methods the clinical and MRI data of 5 cases of PMA proved by surgery and pathology were analyzed retrospectively. Results there were 3 solid lesions and 2 solid lesions. There was no obvious peritumoral edema, hydrocephalus in 2 cases, solid lesions in 2 cases as long T _ 1, long T _ 2 signal in 3 cases as longer T _ 1, T _ 2 signal in a little longer than T _ 2 signal, T _ 1 in the lesion, and T _ 2 strip or flocculent signal in the lesion. The cystic lesions were characterized by long T _ 1, long T _ 2 signal, enhanced enhancement of cystic wall in 2 cases with hypointensity or hypointensity in 3 cases, and increased or decreased NAA / Cr in the solid part of the lesions. Conclusion Sellar area PMA is more likely to occur in infants and young children. The size of the lesions was large, the majority of lesions were parenchymal lesions, and the peripheral edema rarely showed isohypointensity on DWI, and the enhancement was significantly uneven, and there were multiple small dots or stripe hypointensity. Mrs was consistent with the spectrum of astrocytoma.
【作者单位】：长江航运总医院武汉脑科医院;
【分类号】：R739.4;R445.2

【相似文献】