Tongue cancer MRI: Difference between revisions
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{{Tongue cancer}} | {{Tongue cancer}} | ||
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==Overview== | ==Overview== | ||
Head and neck MRI scan is diagnostic of tongue cancer. On [[head]] and [[neck]] [[MRI]], tongue cancer is characterized by isointense to hypointense mass on T1-weighted MRI and isotense to 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 is excellent at identifying the extent of tumor infiltration and is especially useful in patients with significant dental amalgam which causes artifact on CT.<ref name="radio"> Squamous cell carcinoma of the tongue. Radiopedia(2015) http://radiopaedia.org/articles/squamous-cell-carcinoma-of-the-tongue Accessed on November 16, 2015</ref> | |||
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! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|MRI component}} | |||
! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Features}} | |||
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:T1 | |||
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*Intermediate to low signal | |||
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:T2 | |||
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*Intermediate to high signal | |||
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:T1 contrast + gadolinium with fat saturation | |||
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*Tumors enhance | |||
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In larger lesions that abut the mandible, MRI is more sensitive than CT at identifying early marrow change (low T1 signal, high T2 signal, enhancement) but less sensitive at visualising cortical erosion. | |||
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Axial T1 choroidal melanoma.jpg|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> | |||
Coronal T1 choroidal melanoma.jpg|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> | |||
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==References== | ==References== | ||
{{reflist|2}} | {{reflist|2}} | ||
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{{WikiDoc Sources}} | |||
[[Category:Disease]] | |||
[[Category:Ophthalmology]] | |||
Revision as of 17:49, 16 November 2015
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Tongue cancer Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Tongue cancer MRI On the Web |
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American Roentgen Ray Society Images of Tongue cancer MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [3]
Overview
Head and neck MRI scan is diagnostic of tongue cancer. On head and neck MRI, tongue cancer is characterized by isointense to hypointense mass on T1-weighted MRI and isotense to hyperintense mass on T2-weighted MRI.[1]
MRI
MRI is excellent at identifying the extent of tumor infiltration and is especially useful in patients with significant dental amalgam which causes artifact on CT.[1]
| MRI component | Features |
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In larger lesions that abut the mandible, MRI is more sensitive than CT at identifying early marrow change (low T1 signal, high T2 signal, enhancement) but less sensitive at visualising cortical erosion.
![Ultrasound showing primary uveal melanoma[2]](/index.php/File:Axial_T1_choroidal_melanoma.jpg)
![Ultrasound showing primary uveal melanoma[2]](/index.php/File:Coronal_T1_choroidal_melanoma.jpg)
References
- ↑ 1.0 1.1 Retinoblastoma. Radiopedia(2015) http://radiopaedia.org/articles/primary-uveal-malignant-melanoma Accessed on October 21, 2015
- ↑ 2.0 2.1 Image courtesy of Dr. Preveen Jha Radiopaedia (original file [1]).[http://radiopaedia.org/licence Creative Commons BY-SA-NC