磁共振波谱在颅内神经肠囊肿诊断中的作用
Role of MR spectroscopy in diagnosis of intracranial neuroenteric cyst.
作者信息
Phadke R V, Naik Suprava, Udiya Alok, Shetty Gurucharan S, Singh Vivek, Bhoi Sanjeev Kumar
机构信息
Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Science, Lucknow, 226014, India.
Department of Radiodiagnosis, All India Institute of Medical Sciences, Bhubaneswar, Odisha, 751019, India.
出版信息
Childs Nerv Syst. 2018 Sep;34(9):1791-1794. doi: 10.1007/s00381-018-3802-1. Epub 2018 Apr 20.
INTRODUCTION
Neuroenteric cysts are rare benign endodermal lesions of the central nervous system that result from incomplete resorption of neuroenteric canal and mostly found in cervical and upper thoracic spinal canal. Intracranial neuroenteric cysts are extra axial and commonly located anteriorly in the posterior cranial fossa. MRI demonstrates variable intensity within the lesion on T1, T2W, and DWI sequences.
METHODS
Three cases of posterior fossa non-enhancing cystic lesions of variable signal intensity underwent MRI with MR spectroscopy, where MR spectroscopy demonstrated dominant peak at 2 ppm, mimicking normal Nacetyl aspartate (NAA).
CONCLUSION
MR spectroscopy in addition to conventional MRI may help in differentiating intracranial neuroenteric cyst from its close differentials.
引言
神经肠囊肿是中枢神经系统罕见的良性内胚层病变，由神经肠管不完全吸收所致，多见于颈段和上胸段椎管。颅内神经肠囊肿位于轴外，通常位于后颅窝前部。MRI在T1、T2加权和扩散加权成像（DWI）序列上显示病变内信号强度各异。
方法
对3例后颅窝信号强度各异的无强化囊性病变进行了磁共振波谱成像（MRS）检查，MRS显示主峰位于2 ppm，类似正常的N-乙酰天门冬氨酸（NAA）。
结论
除传统MRI外，MRS可能有助于颅内神经肠囊肿与相近鉴别诊断疾病的区分。
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