Imaging features of oligodendroglioma in cerebellar hemispheres

VernacularTitle:小脑半球少突胶质细胞瘤的MRI表现
Author: Ruiping ZHENG ¹ ; Yong ZHANG ; Jingliang CHENG ; Yanliang LI ; Chunxiao BU
Author Information

1. 郑州大学第一附属医院磁共振科
Keywords: cerebellar hemispheres; oligodendroglioma; magnetic resonance imaging
From: Journal of Practical Radiology 2018;34(2):187-190
CountryChina
Language:Chinese
Abstract: Objective To improve the diagnosis of oligodendroglioma(OD)in cerebellar hemispheres and discuss MRI features. Methods Clinical and imaging data of 7 cases with OD in cerebellar hemispheres were analyzed retrospectively,which were confirmed by surgery and pathology.Results In 7 patients,4 patients were OD,and 3 patients were anaplastic oligodendroglioma(AOD).MRI showed hypointense on T1WI and vividly hyperintense or mixed hyperintense on T2WI.The time intensity curve(TIC)manifested rise slowly;DWI(b=1 000 s/mm2) showed homogeneously hypointense or iso-hypointense.The ratios of OD and AOD were 1.753±0.784,1.660±0.551 respectively;Magnetic resonance spectroscopy(MRS)of oligodendrogliomas revealed a increased choline(Cho)and reduced N-acetylaspartate(NAA)without lactate(Lac)peak.Conclusion MRI manifestation of OD in cerebellar hemispheres has certain characteristics:the boundary of lesion is unclear, irregular in shape,easy to cystic and necrotic,with or without peripheral edema of the tumor,delayed enhancement,higher in Cho peak,lower in NAA peak and lacking in Lac peak.