Optic nerve glioma MRI: Difference between revisions

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Latest revision as of 14:47, 27 November 2017

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

T1	Enlargement, often iso to hypointense compared to the contralateral side
T2	Hyperintense centrally Low signal at the periphery representing the dura
T1 C+ (Gd)	enhancement is variable

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 3: / Line 3: @@
 {{CMG}}{{AE}}{{Simrat}}
 ==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.
+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).
+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:<ref name="radio">  Optic nerve glioma. Radiopedia(2015) http://radiopaedia.org/articles/optic-nerve-glioma Accessed on October 2 2015</ref>
+*The MRI features of optic nerve glioma include:<ref name="radio">  Optic nerve glioma. Radiopedia(2015) http://radiopaedia.org/articles/optic-nerve-glioma Accessed on October 2 2015</ref>
 {| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align=center
 |valign=top|
@@ Line 17: / Line 17: @@
 :T1
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*enlargement is often isointense to hypointense compared to the contralateral side
+*Enlargement, often iso to hypointense compared to the contralateral side
 |-
 | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
 :T2
 | style="padding: 5px 5px; background: #F5F5F5;" |
-*hyperintense centrally
+*Hyperintense centrally
-*low signal at the periphery representing the dura
+*Low signal at the periphery representing the dura
 |-
 | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
@@ Line 31: / Line 31: @@
 |-
 |}
-[[File:MRI optic nerve glioma.jpg|thumb|none|200px|MRI showing optic nerve glioma<ref> 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>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>]]
+[[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:Coronal T2 MRI of optic nerve glioma.jpg|thumb|none|200px|Coronal T2 MRI showing bilateral optic nerve glioma<ref>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>]]
+[[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>]]
+[[File:Coronal T2 MRI of optic nerve glioma.jpg|thumb|none|200px|Coronal T2 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>]]
 ==References==
 {{reflist|2}}
@@ Line 41: / Line 43: @@
 [[Category:Neurology]]
 [[Category:Ophthalmology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
+[[Category:Ophthalmology]]
+[[Category:Neurosurgery]]

Optic nerve glioma MRI: Difference between revisions

Latest revision as of 14:47, 27 November 2017

Overview

MRI

References

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