Optic nerve glioma MRI: Difference between revisions

	Optic nerve glioma Microchapters
Home
Patient Information
Overview
Historical Perspective
Classification
Pathophysiology
Causes
Differentiating Optic nerve glioma from other Diseases
Epidemiology and Demographics
Risk Factors
Screening
Natural History, Complications and Prognosis
Diagnosis
History and Symptoms
Physical Examination
Laboratory Findings
Electrocardiogram
Chest X Ray
CT
MRI
Echocardiography or 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
Optic nerve glioma MRI On the Web
Most recent articles
Most cited articles
Review articles
CME Programs
Powerpoint slides
Images
American Roentgen Ray Society Images of Optic nerve glioma MRI All Images X-rays Echo & Ultrasound CT Images MRI
Ongoing Trials at Clinical Trials.gov
US National Guidelines Clearinghouse
NICE Guidance
FDA on Optic nerve glioma MRI
CDC on Optic nerve glioma MRI
Optic nerve glioma MRI in the news
Blogs on Optic nerve glioma MRI
Directions to Hospitals Treating Optic nerve glioma
Risk calculators and risk factors for Optic nerve glioma MRI

← Older edit Newer edit →

VisualWikitext

Revision as of 13:18, 13 October 2015

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [3]

Overview

On head and neck MRI, optic nerve glioma is characterized by isointense to hypointense mass on T1-weighted MRI, and hyperintense mass on T2-weighted MRI.

MRI

Radiographs no longer have any real role to play in the diagnosis of orbital masses, however if performed enlargement of the optic canal may be demonstrated if the tumor is not confined to the orbit. Additional findings of NF1 may also be visible. The diagnosis of optic nerve glioma is best made by magnetic resonance imaging (MRI), which allows visualization of the entire course of the optic nerve. MRI also delineates hypothalamic involvement more clearly than computed tomography (CT).

The MRI features of optic nerve glioma include:^[1]


MRI component	Features

Grade 1	well differentiated or low grade – slow growing, less likely to spread
Grade 2	moderately well differentiated or moderate grade
Grade 3	poorly differentiated or high grade – tend to grow quickly, more likely to spread
Grade 4	undifferentiated or high grade – tend to grow very quickly, likely to spread

Axial T1 MRI showing bilateral optic nerve glioma^[2]

Coronal T2 MRI showing bilateral optic nerve glioma^[2]

References

↑ Optic nerve glioma. Radiopedia(2015) http://radiopaedia.org/articles/optic-nerve-glioma Accessed on October 2 2015
↑ ^2.0 ^2.1 ^2.2 Image courtesy of Dr Frank Gaillard. Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC

Template:WH Template:WS

[radio-1] Optic nerve glioma. Radiopedia(2015) http://radiopaedia.org/articles/optic-nerve-glioma Accessed on October 2 2015

[radio1-2] 2.0 ^2.1 ^2.2 Image courtesy of Dr Frank Gaillard. Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC

[1]

[2]

@@ Line 15: / Line 15: @@
 |-
 | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |
-:T1
+:Grade 1
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*enlargement is often isointense to hypointense compared to the contralateral side
+*well differentiated or low grade – slow growing, less likely to spread
 |-
 | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:T2
+:Grade 2
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*hyperintense centrally
+*moderately well differentiated or moderate grade
-*low signal at the periphery representing the dura
 |-
 | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:T1 C+ (Gd)
+:Grade 3
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*enhancement is variable
+*poorly differentiated or high grade – tend to grow quickly, more likely to spread
+|-
+| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
+:Grade 4
+| style="padding: 5px 5px; background: #F5F5F5;" |
+*undifferentiated or high grade – tend to grow very quickly, likely to spread
 |-
 |}
 [[File:MRI optic nerve glioma.jpg|thumb|none|200px|MRI showing optic nerve glioma<ref name="radio1">Image courtesy of Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia] (original file [http://http://radiopaedia.org/cases/optic-nerve-glioma-nf1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>]]
 [[File:Bilateral optic nerve glioma.jpg|thumb|none|200px|Axial T1 MRI showing bilateral optic nerve glioma<ref name="radio1">Image courtesy of Dr Frank Gaillard. [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/neurofibromatosis-type-1-bilateral-optic-nerve-gliomas]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>]]

Optic nerve glioma MRI: Difference between revisions

Revision as of 13:18, 13 October 2015

Overview

MRI

References

Navigation menu

Search