Oligodendroglioma CT: Difference between revisions
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! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Tumor characteristics on CT}} | ! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Tumor characteristics on CT}} | ||
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| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Non-contrast CT''' | | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Non-[[contrast]] [[CT]]''' | ||
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* Tumors are of mixed density i.e. from hypodense to isodense | * [[Tumors]] are of mixed [[density]] i.e. from hypodense to isodense | ||
* High-attenuation areas within the tumor are due to: | * High-[[attenuation]] [[Area|areas]] within the [[tumor]] are due to: | ||
** Calcification most likely(70-90% of oligodendrogliomas are calcified), which can be located centrally, peripherally or they can be ribbon-like | ** [[Calcification]] most likely (70-90% of [[oligodendrogliomas]] are [[Calcification|calcified]]), which can be [[Location parameter|located]] [[Central|centrally]], peripherally or they can be ribbon-like | ||
** Hemorrhage (less commonly) | ** [[Hemorrhage]] (less commonly) | ||
* Overlying skull may show pressure remodelling | * Overlying [[skull]] may show [[pressure]] remodelling | ||
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| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Post-contrast CT''' | | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |'''Post-[[contrast]] [[CT]]''' | ||
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* Approximately 50% of oligodendrogliomas enhance with degree of enhancement being extremely variable, ranging from: | * Approximately 50% of [[oligodendrogliomas]] [[Enhancer|enhance]] with [[Degree (angle)|degree]] of [[Enhancer|enhancement]] being extremely [[variable]], [[Range (statistics)|ranging]] from: | ||
** No enhancement to | ** No [[Enhancer|enhancement]] to | ||
** Strikingly vivid enhancement | ** Strikingly vivid [[Enhancer|enhancement]] | ||
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Revision as of 22:52, 18 May 2019
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Oligodendroglioma Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Oligodendroglioma CT On the Web |
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American Roentgen Ray Society Images of Oligodendroglioma CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[3]Sujit Routray, M.D. [4]
Overview
Head CT scan may be helpful in the diagnosis of oligodendroglioma. Findings on CT scan suggestive of oligodendroglioma are round or oval, marginated, hypo- to isodense mass with hemorrhage, ribbon-like calcification, ill-defined enhancement following intravenous contrast administration, pressure erosion/remodelling of overlying skull, and marked ventricular enlargement suggestive of hydrocephalus.
CT
- Head CT scan may be helpful in the diagnosis of oligodendroglioma
- Findings on CT scan suggestive of oligodendroglioma are listed below:[1][2][3][4][5]
- Round or oval, sharply marginated mass involving the cortex or subcortical white matter
- Hypodense to isodense mass
- Hemorrhage
- Overlying skull may show pressure erosion/remodelling
- Calcification (70-90%)
- Ill-defined enhancement (50%) following intravenous contrast administration
- Marked ventricular enlargement suggestive of hydrocephalus
| CT type | Tumor characteristics on CT |
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| Non-contrast CT |
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| Post-contrast CT |
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References
- ↑ Radiographic features of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma
- ↑ 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
- ↑ Image courtesy of Dr. Henry Knipe and Dr Frank Gaillard et al.. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ Oligodendrogliomas. SurgWiki 2015. http://www.surgwiki.com/wiki/Intracranial_tumours,_infection_and_aneurysms#Oligodendroglioma