<prompt> T1W MRI of the orbit is shown below, probable diagnosis?MelanomaRetinoblastomaOptic GliomaMeningioma  <response>: 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. 