Oligodendroglioma MRI
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Oligodendroglioma Microchapters |
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Diagnosis |
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Oligodendroglioma MRI On the Web |
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American Roentgen Ray Society Images of Oligodendroglioma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]
Overview
Brain MRI is helpful in the diagnosis of oligodendroglioma. On brain MRI, oligodendroglioma is characterized by a mass which is typically hypointense on T1-weighted images and hyperintense on T2-weighted images. Calcification is observed on T2 decay component of MRI.[1][2]
MRI
- Brain MRI may be helpful in the diagnosis of oligodendroglioma.
- Findings on MRI suggestive of oligodendroglioma are listed below:[1][2]
| MRI component | Findings |
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T1 |
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T2 |
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T2* decay |
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T1 with gadolinium |
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Diffusion weighted images |
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Gallery
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![MRI axial FLAIR showing a relatively well circumscribed mass involving the temporal lobe and insular cortex, without convincing enhancement, and minimal restricted diffusion.[3]](/images/0/0f/Oligodendroglioma_axial_FLAIR.jpg)
MRI axial FLAIR showing a relatively well circumscribed mass involving the temporal lobe and insular cortex, without convincing enhancement, and minimal restricted diffusion.[3] -
![MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hypointense on T1 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4]](/images/9/97/Anaplastic_oligoastrocytoma_MRI_T1.jpg)
MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hypointense on T1 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4] -
![MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hyperintense on T2 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4]](/images/2/25/Anaplastic_oligoastrocytoma_MRI_T2.jpg)
MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hyperintense on T2 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4] -
![A left frontal lobe mass with central haemorrhagic component is present (intrinsic high T1, low T2) with a peripheral region of enhancement and high T2 signal. Some of the enhancement may be in reaction to the haemorrhage, depending on the time course.[5]](/images/b/ba/Oligodendroglioma_-_anaplastic_-_haemorrhagic_MRI_axial_DWI.jpg)
A left frontal lobe mass with central haemorrhagic component is present (intrinsic high T1, low T2) with a peripheral region of enhancement and high T2 signal. Some of the enhancement may be in reaction to the haemorrhage, depending on the time course.[5] -
![A sharply defined zone of abnormal slightly heterogeneous signal in the left parietal lobe extends to involve the medial cortex of the superior parietal lobule. Inferiorly it abuts and distorts the cingulate gyrus. Superiorly it is significantly posterior to the precentral gyrus and slightly posterior to the left post central gyrus. Posterior and laterally it extends to and distorts the left intraparietal sulcus. It extends to within 1 cm of the parieto-occipital fissure postero-medially, slightly posteriorly bowing it. It exhibits no restricted diffusion and no pathological contrast enhancement.[5]](/images/5/5e/Oligodendroglioma_axial_SWI.jpg)
A sharply defined zone of abnormal slightly heterogeneous signal in the left parietal lobe extends to involve the medial cortex of the superior parietal lobule. Inferiorly it abuts and distorts the cingulate gyrus. Superiorly it is significantly posterior to the precentral gyrus and slightly posterior to the left post central gyrus. Posterior and laterally it extends to and distorts the left intraparietal sulcus. It extends to within 1 cm of the parieto-occipital fissure postero-medially, slightly posteriorly bowing it. It exhibits no restricted diffusion and no pathological contrast enhancement.[5]
![MRI axial FLAIR showing a relatively well circumscribed mass involving the temporal lobe and insular cortex, without convincing enhancement, and minimal restricted diffusion.[3]](/index.php/File:Oligodendroglioma_axial_FLAIR.jpg)
![MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hypointense on T1 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4]](/index.php/File:Anaplastic_oligoastrocytoma_MRI_T1.jpg)
![MRI including post contrast sequences demonstrates a large mass involving the majority of the left frontal lobe, which exerts significant mass effect resulting in midline shift and effacement of the frontal horn of the lateral ventricle. The mass is heterogeneous, but predominantly hyperintense on T2 with a surrounding mantle of tumor edema. Following contrast there is heterogeneous moderate enhancement.[4]](/index.php/File:Anaplastic_oligoastrocytoma_MRI_T2.jpg)
![A left frontal lobe mass with central haemorrhagic component is present (intrinsic high T1, low T2) with a peripheral region of enhancement and high T2 signal. Some of the enhancement may be in reaction to the haemorrhage, depending on the time course.[5]](/index.php/File:Oligodendroglioma_-_anaplastic_-_haemorrhagic_MRI_axial_DWI.jpg)
![A sharply defined zone of abnormal slightly heterogeneous signal in the left parietal lobe extends to involve the medial cortex of the superior parietal lobule. Inferiorly it abuts and distorts the cingulate gyrus. Superiorly it is significantly posterior to the precentral gyrus and slightly posterior to the left post central gyrus. Posterior and laterally it extends to and distorts the left intraparietal sulcus. It extends to within 1 cm of the parieto-occipital fissure postero-medially, slightly posteriorly bowing it. It exhibits no restricted diffusion and no pathological contrast enhancement.[5]](/index.php/File:Oligodendroglioma_axial_SWI.jpg)
References
- ↑ 1.0 1.1 Radiographic features of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma
- ↑ 2.0 2.1 Stark AM, Hugo HH, Mehdorn HM, Knerlich-Lukoschus F (2009). "Acute Hydrocephalus due to Secondary Leptomeningeal Dissemination of an Anaplastic Oligodendroglioma". Case Rep Med. 2009: 370901. doi:10.1155/2009/370901. PMC 2797365. PMID 20052406.
- ↑ Image courtesy of Dr. Frank Gaillard. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ 4.0 4.1 Image courtesy of Dr. Frank Gaillard. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ 5.0 5.1 Image courtesy of Dr. Henry Knipe and Dr. Frank Gaillard et al. Radiopaedia (original file here). Creative Commons BY-SA-NC