MRIfeaturesofgemistocyticastrocytoma
10.3969/j.issn.1002-1671.2019.03.005
- VernacularTitle:肥胖细胞型星形细胞瘤MRI表现
- Author:
Jing WU
1
;
Wensheng WANG
;
Lina CHENG
;
Hanbo LIN
;
Lili ZHONG
;
Wenjian HUANG
;
Peng HE
;
Qianwen LIANG
Author Information
1. 广东三九脑科医院影像中心
- Keywords:
gemistocytic;
astrocytoma;
magneticresonanceimaging
- From:
Journal of Practical Radiology
2019;35(3):357-361,366
- CountryChina
- Language:Chinese
-
Abstract:
Objective ToexploretheMRIfeaturesanddifferentialdiagnosisofgemistocyticastrocytoma(GemA).Methods The MRIfeaturesof10casesofGemAprovedbysurgeryandpathologywereinvestigatedretrospectively(thelocationoftumor,tumor shape,boundary,signalandenhancement)andtheliteraturewasreviewed.Results All10casesofGemA weresupratentorialand solitary.Ofthese10cases,7caseswerelocatedinthefrontallobe,5casesinthetemporallobe,6casesinmultiplelobesandinvaded theoppositebraintissuesthroughcorpuscallosum.8casesweresolidGcystic,8casespresentedwithunclearboundary,only2cases hadclearboundary.Therewasnoedemaormildedemain7casesandobviousedemain3cases.Thesolidpartoftumorswereisointense orslighthypointenseonT1WI,only1caseshowedhighintensityonT1WI,isointenseorslighthyperintenseonT2WI.CTsuggested calcificationin2cases.6casesweremildlyenhanced,4casesweremarkedlyenhanced.MRSshowed(n＝4)thatCHopeakwasmildly ormoderatelyincreased,NAApeakwassignificantlyreduced,theaverageratioofCho/NAA was2.91.DWIshowedhyperintenseor slighthyperintense(n＝3),theADCaveragevalueoftumorROIwasabout(1.150±0.081)×10－3 mm2/s.1caseofSWIsequence showedthickeningandcircuitousvascularshadow.Conclusion AsMRIofGemAischaracterizedbyhighandlowgradegliomas,the preoperativediagnosisisdifficult.Combiningenhancementwithfunctionalexamination,itisexpectedtoimprovetheaccuracyofpreoperative diagnosisofGemA.
