Uveal melanoma MRI: Difference between revisions

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==Overview==
==Overview==
Head and neck MRI may be helpful in the diagnosis of uveal melanoma. 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>
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==
==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>
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>

Revision as of 14:06, 22 October 2015

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]

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.[1]

MRI

MRI is the modality of choice for assessment of malignant uveal melanomas.[1]

MRI component Features
T1 or Proton Density
  • Uveal melanomas are seen as moderately high signal mass lesion
  • Associated exudative retinal detachment is moderately high signal
T2
  • Moderately low signal mass lesion
  • Associated exudative retinal detachment is moderately high signal
  • Haemorrhagic subretinal fluid has variable signal pattern
T1 contrast with gadolinium
  • Tumors enhance
  • Fat suppression useful in detecting extraocular extention


References

  1. 1.0 1.1 Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/primary-uveal-malignant-melanoma Accessed on October 21, 2015

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