Malignant melanotic schwannoma of the cervical spinal cord: a case report BMC Neurology Springer Nature Link Systemic Treatment for Advanced and Metastatic Malignant Peripheral Nerve Sheath TumorsA Sarcoma Reference Center Experience Improving our Understanding of the Management and Pathogenesis of Rare and Neglected Tumors of the Central and Peripheral Nervous System Frontiers Research Topic Pathology Outlines Malignant melanotic nerve sheath tumor Malignant peripheral nerve sheath tumor Radiology Reference Article Radiopaedia.org Malignant Melanotic Nerve Sheath Tumor of the Neck: A Case Report Applied Radiation Oncology