Oligodendroglioma CT

Oligodendroglioma Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Oligodendroglioma from other Diseases
Epidemiology & Demographics
Risk Factors
Screening
Natural History, Complications, and Prognosis
Diagnosis
Staging
History & Symptoms
Physical Examination
Laboratory Findings
Chest X Ray
CT
MRI
Ultrasound
Other Imaging Findings
Other Diagnostic Studies
Treatment
Medical Therapy
Surgery
Primary Prevention
Secondary Prevention
Cost-Effectiveness of Therapy
Future or Investigational Therapies
Case Studies
Case #1
Oligodendroglioma CT On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Oligodendroglioma CT All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Oligodendroglioma CT
CDC on Oligodendroglioma CT
Oligodendroglioma CT in the news
Blogs on Oligodendroglioma CT
Directions to Hospitals Treating Oligodendroglioma
Risk calculators and risk factors for Oligodendroglioma CT

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [4]Associate Editor(s)-in-Chief: Sara Mohsin, M.D.[5]Sujit Routray, M.D. [6]

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:
  • 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%)
    • 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]

Oligodendroglioma CT [2]

Oligodendroglioma CT [3]