There is a lesion in the orbit. Can you diagnose?
Correct Answer: Choroidal melanoma
Description: Ans. A. Choroidal melanomaThe hyperintensity on T1 weighted MRI very specific for presence of melanin containing tumor in the orbit.The other causes of T1 hyperintensities are1. Blood products2. Proteinaceous substances3. Fat4. Gadolinium
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Radiology
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