Oligodendroglioma CT: Difference between revisions

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==CT==
==CT==
*Head CT scan may be helpful in the diagnosis of oligodendroglioma  
*Head CT scan may be helpful in the diagnosis of oligodendroglioma  
*Findings on CT scan suggestive of oligodendroglioma are listed below:<ref name="CTradiopaedia">Radiographic features of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma</ref><ref name="pmid20052406">{{cite journal| author=Stark AM, Hugo HH, Mehdorn HM, Knerlich-Lukoschus F| title=Acute Hydrocephalus due to Secondary Leptomeningeal Dissemination of an Anaplastic Oligodendroglioma. | journal=Case Rep Med | year= 2009 | volume= 2009 | issue=  | pages= 370901 | pmid=20052406 | doi=10.1155/2009/370901 | pmc=PMC2797365 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20052406  }} </ref><ref name=CTradio>Image courtesy of Dr. Frank Gaillard. Radiopaedia (original file [http://radiopaedia.org/cases/anaplastic-oligoastrocytoma here]). Creative Commons BY-SA-NC</ref><ref name=Radiopaedia>Image courtesy of Dr. Henry Knipe and Dr Frank Gaillard et al.. Radiopaedia (original file [http://radiopaedia.org/articles/oligodendroglioma here]). Creative Commons BY-SA-NC</ref><ref name=swct>Oligodendrogliomas. SurgWiki 2015. http://www.surgwiki.com/wiki/Intracranial_tumours,_infection_and_aneurysms#Oligodendroglioma</ref>
*Findings on CT scan suggestive of oligodendroglioma are listed below:<ref name="CTradiopaedia">Radiographic features of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma</ref><ref name="pmid20052406">{{cite journal| author=Stark AM, Hugo HH, Mehdorn HM, Knerlich-Lukoschus F| title=Acute Hydrocephalus due to Secondary Leptomeningeal Dissemination of an Anaplastic Oligodendroglioma. | journal=Case Rep Med | year= 2009 | volume= 2009 | issue=  | pages= 370901 | pmid=20052406 | doi=10.1155/2009/370901 | pmc=PMC2797365 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20052406  }} </ref><ref name="CTradio">Image courtesy of Dr. Frank Gaillard. Radiopaedia (original file [http://radiopaedia.org/cases/anaplastic-oligoastrocytoma here]). Creative Commons BY-SA-NC</ref><ref name="Radiopaedia">Image courtesy of Dr. Henry Knipe and Dr Frank Gaillard et al.. Radiopaedia (original file [http://radiopaedia.org/articles/oligodendroglioma here]). Creative Commons BY-SA-NC</ref><ref name="swct">Oligodendrogliomas. SurgWiki 2015. http://www.surgwiki.com/wiki/Intracranial_tumours,_infection_and_aneurysms#Oligodendroglioma</ref>
**Round or oval, sharply marginated mass involving the cortex or subcortical white matter
**Round or oval, sharply marginated mass involving the cortex or subcortical white matter
**Hypodense to isodense mass
**Hypodense to isodense mass
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**Ill-defined enhancement (50%) following intravenous contrast administration
**Ill-defined enhancement (50%) following intravenous contrast administration
**Marked ventricular enlargement suggestive of [[hydrocephalus]]
**Marked ventricular enlargement suggestive of [[hydrocephalus]]
{| class="wikitable"
|+Oligodendroglioma CT characteristics
!CT type
!Tumor characteristics on CT
|-
|'''Non-contrast CT'''
|
* Tumors are of mixed density i.e. from hypodense to isodense
* High-attenuation 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
** Hemorrhage (less commonly)
* Overlying skull may show pressure remodelling
|-
|'''Post-contrast CT'''
|
* Approximately 50% of oligodendrogliomas enhance with degree of enhancement being extremely variable, ranging from:
** No enhancement to
** Strikingly vivid enhancement
|}
{|
{|
|
|

Revision as of 17:22, 10 May 2019

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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, calcification, and ill-defined enhancement following intravenous contrast administration.

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
    • Calcification (70-90%)
      • Located centrally or peripherally
      • May be ribbon-like
    • Ill-defined enhancement (50%) following intravenous contrast administration
    • Marked ventricular enlargement suggestive of hydrocephalus
Oligodendroglioma CT characteristics
CT type Tumor characteristics on CT
Non-contrast CT
  • Tumors are of mixed density i.e. from hypodense to isodense
  • High-attenuation 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
    • Hemorrhage (less commonly)
  • Overlying skull may show pressure remodelling
Post-contrast CT
  • Approximately 50% of oligodendrogliomas enhance with degree of enhancement being extremely variable, ranging from:
    • No enhancement to
    • Strikingly vivid enhancement
Heterogeneous region of contrast enhancement, edema, and mass effect is present in the left frontal lobe.Source: Dr. Frank Gaillard. Radiopaedia
Right temporal hypodense space occupying lesion which contains internal central calcifications.Source: Dr. Henry Knipe and Dr Frank Gaillard et al.. Radiopaedia
Oligodendroglioma that is highly calcified. [1]

References

  1. ↑ Radiographic features of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma
  2. ↑ 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.
  3. ↑ Image courtesy of Dr. Frank Gaillard. Radiopaedia (original file here). Creative Commons BY-SA-NC
  4. ↑ Image courtesy of Dr. Henry Knipe and Dr Frank Gaillard et al.. Radiopaedia (original file here). Creative Commons BY-SA-NC
  5. ↑ Oligodendrogliomas. SurgWiki 2015. http://www.surgwiki.com/wiki/Intracranial_tumours,_infection_and_aneurysms#Oligodendroglioma

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