Uveal melanoma MRI: Difference between revisions

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Latest revision as of 18:11, 14 August 2019

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Fahimeh Shojaei, M.D.

Overview

MRI may be helpful in the diagnosis of uveal melanoma. Findings on MRI suggestive of uveal melanoma include high intensity mass lesion (due to melanin and hemorrhage) on T1, and low intensity mass lesion on T2. The lesion enhances with gadolinium.

MRI

MRI may be helpful in the diagnosis of uveal melanoma. Findings on MRI suggestive of uveal melanoma include:

High intensity mass lesion (due to melanin and hemorrhage) on T1
Low intensity mass lesion on T2
The lesion enhances with gadolinium

Iris/ ciliary body melanoma

Case courtesy of Dr Dalia Ibrahim, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/31362">rID: 31362</a>

Chroida; melanoma

Case courtesy of Dr Ammar Haouimi, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/60192">rID: 60192</a>

References

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@@ Line 1: / Line 1: @@
 __NOTOC__
 {{Uveal melanoma}}
-{{CMG}}{{AE}}{{Simrat}}
+{{CMG}}{{AE}} {{Fs}}
 ==Overview==
-Head and neck MRI scan is diagnostic of uveal melanoma. On [[head]] and [[neck]] [[MRI]], uveal melanoma is characterized by isointense to hypointense mass on T1-weighted MRI and hyperintense mass on T2-weighted MRI.<ref name="radio">  Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/primary-uveal-malignant-melanoma Accessed on October 21, 2015</ref>
+[[MRI]] may be helpful in the [[diagnosis]] of uveal melanoma. Findings on [[MRI]] suggestive of uveal melanoma include high intensity [[mass]] [[lesion]] (due to [[melanin]] and [[hemorrhage]]) on [[T1]], and low intensity [[mass]] lesion on T2. The [[lesion]] enhances with [[gadolinium]].
 ==MRI==
-MRI is the modality of choice for assessment of malignant uveal melanomas.<ref name="radio">  Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/primary-uveal-malignant-melanoma Accessed on October 21, 2015</ref>
-{| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align=center
+[[MRI]] may be helpful in the [[diagnosis]] of uveal melanoma. Findings on [[MRI]] suggestive of uveal melanoma include:
-|valign=top|
-|+
+* High intensity [[mass]] [[lesion]] (due to [[melanin]] and [[hemorrhage]]) on T1
-! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|MRI component}}
+* Low intensity [[mass]] [[lesion]] on T2
-! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Features}}
+* The lesion enhances with [[gadolinium]]
-|-
-| style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |
+=== Iris/ ciliary body melanoma ===
-:T1 or Proton Density
+[[File:5af151cc86aa97d54c3897001c7e60 big gallery.jpg|400px|none|thumb|Case courtesy of Dr Dalia Ibrahim, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/31362">rID: 31362</a>]]<br />
-| style="padding: 5px 5px; background: #F5F5F5;" |
-*Uveal melanomas are seen as moderately high signal mass lesion
+=== Chroida; melanoma ===
-*Associated exudative retinal detachment is moderately high signal
+[[File:50e2182c105bc220b390fefd13fb16 big gallery.jpeg|400px|none|thumb|Case courtesy of Dr Ammar Haouimi, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/60192">rID: 60192</a>]]
-|-
+<br />
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:T2
-| style="padding: 5px 5px; background: #F5F5F5;" |
-*Moderately low signal mass lesion
-*Associated exudative retinal detachment is moderately high signal
-*Haemorrhagic subretinal fluid has variable signal pattern
-|-
-| style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
-:T1 contrast with gadolinium
-| style="padding: 5px 5px; background: #F5F5F5;" |
-*Tumors enhance
-*Fat suppression useful in detecting extraocular extention
-|-
-|}
-[[File:Axial T1 choroidal melanoma.jpg|thumb|none|200px|Ultrasound showing primary uveal melanoma<ref name="radio1">Image courtesy of Dr. Preveen Jha [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/choroidal-melanoma-1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>]]
-[[File:Coronal T1 choroidal melanoma.jpg|thumb|none|200px|Ultrasound showing primary uveal melanoma<ref name="radio1">Image courtesy of Dr. Preveen Jha [http://www.radiopaedia.org Radiopaedia] (original file [http://radiopaedia.org/cases/choroidal-melanoma-1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC</ref>]]
 ==References==
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 {{WikiDoc Help Menu}}
 {{WikiDoc Sources}}
 [[Category:Disease]]
+[[Category:Ophthalmology]]
+ [[Category:Up-To-Date]]
+[[Category:Oncology]]
+[[Category:Medicine]]
 [[Category:Ophthalmology]]