Improving our Understanding of the Management and Pathogenesis of Rare and Neglected Tumors of the Central and Peripheral Nervous System Frontiers Research Topic New Research Helps Identify Uveal Melanomas Most Likely to Spread to the Liver Pigmented Lesions of the Central Nervous System: Radiologic Pathologic CorrelationRadioGraphics Amelanotic Malignant Melanoma: A Case Report Cureus Metastatic melanoma with unknown primary