MRI manifestations of the neuronal tumors of central nervous system
Author(s): WANG Zhi-yang, YANG Xiao-ping, ZHANG Min, LI Kui-cheng
Pages: 377-380
Year: 2015 Issue: 3
Journal: Journal of Medical Imaging
Keyword: Neuronal tumor; Magnetic resonance imaging;
Abstract: Objective To explore the MRI features of various neuronal tumors of the central nervous system (CNS) . Methods Twenty‐four patients with pathology proved neuronal tumors of CNS were collected .MRI examinations were performed including T1WI ,T2WI ,FLAIR and T1WI enhancement .MRI features including lesion location ,shape ,signal intensity ,mass effect and contrast enhancement were reviewed retrospectively .Results Of the 24 patients with CNS neu‐ronal tumors ,there were dysembryoplastic neuroepithelial tumor (DNET ,15 patients) ,ganglioglioma (7 patients) and central neurocytoma (2 patients) .In 15 DNET cases ,the lesion was located in different lobes (12 temporal lobe ,3 frontal lobe and 1 parietal‐occipital lobe) ,mainly involved cortical area .The lesion presented solitary or multiple cystic appear‐ances .Hyperintensity on T2 WI/FLAIR and hypointensity on T 1 WI was revealed .No Contrast enhancement was noted on twelve cases .The other 3 case showed patchy ,nodular and circular enhancement .No edema was found around the le‐sions .Seven cases with ganglioglioma included 5 temporal lobe ,1 frontal lobe ,and 1 parietal lobe .MRI features were cystic‐solid tumors ,Hyper‐isointensity on T2 WI/FLAIR and hypo‐isointensity on T1 WI was revealed .Two cases showed calcification .No edema was found around the tumors .The solid nodular portion of the tumors showed obvious enhance‐ment after contrast administration .Two patients with central neurocytoma were located in lateral ventricles .Cystic‐solid irregular abnormal signal was found on MRI ,which showed hypo‐isointensity on T1WI and hyper‐isointensity on T2WI/FLAIR .The solid and septum portion of the tumor presented obvious enhancement .Conclusion Neuronal tumors in CNS are characteristics on MRI ,which are helpful to differentiate these diseases from other brain tumors .By mastering the im‐aging and clinical features ,we can make the correct diagnosis of the tumors .
Pages: 377-380
Year: 2015 Issue: 3
Journal: Journal of Medical Imaging
Keyword: Neuronal tumor; Magnetic resonance imaging;
Abstract: Objective To explore the MRI features of various neuronal tumors of the central nervous system (CNS) . Methods Twenty‐four patients with pathology proved neuronal tumors of CNS were collected .MRI examinations were performed including T1WI ,T2WI ,FLAIR and T1WI enhancement .MRI features including lesion location ,shape ,signal intensity ,mass effect and contrast enhancement were reviewed retrospectively .Results Of the 24 patients with CNS neu‐ronal tumors ,there were dysembryoplastic neuroepithelial tumor (DNET ,15 patients) ,ganglioglioma (7 patients) and central neurocytoma (2 patients) .In 15 DNET cases ,the lesion was located in different lobes (12 temporal lobe ,3 frontal lobe and 1 parietal‐occipital lobe) ,mainly involved cortical area .The lesion presented solitary or multiple cystic appear‐ances .Hyperintensity on T2 WI/FLAIR and hypointensity on T 1 WI was revealed .No Contrast enhancement was noted on twelve cases .The other 3 case showed patchy ,nodular and circular enhancement .No edema was found around the le‐sions .Seven cases with ganglioglioma included 5 temporal lobe ,1 frontal lobe ,and 1 parietal lobe .MRI features were cystic‐solid tumors ,Hyper‐isointensity on T2 WI/FLAIR and hypo‐isointensity on T1 WI was revealed .Two cases showed calcification .No edema was found around the tumors .The solid nodular portion of the tumors showed obvious enhance‐ment after contrast administration .Two patients with central neurocytoma were located in lateral ventricles .Cystic‐solid irregular abnormal signal was found on MRI ,which showed hypo‐isointensity on T1WI and hyper‐isointensity on T2WI/FLAIR .The solid and septum portion of the tumor presented obvious enhancement .Conclusion Neuronal tumors in CNS are characteristics on MRI ,which are helpful to differentiate these diseases from other brain tumors .By mastering the im‐aging and clinical features ,we can make the correct diagnosis of the tumors .
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