This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroradiology, Subject name: Radiology
T1W MRI of the orbit is shown below, probable diagnosis? 
Select and explain. 
A. Melanoma, B. Retinoblastoma, C. Optic Glioma, D. Meningioma
A: Melanoma
Answer: A: Melanoma 
Explanation: Melanin is T1 hyperintense Lentiform homogenously hyperintense lesion on T1W MRI in adults - Choroidal Melanoma Isointense/ Slightly hyperintense lesion on T1W - MRI in children with intraorbital calcificaitns - Retinoblastoma.