Improving our Understanding of the Management and Pathogenesis of Rare and Neglected Tumors of the Central and Peripheral Nervous System Frontiers Research Topic Recurrent malignant peripheral nerve sheath tumor presenting as an asymptomatic intravenous thrombus extending to the heart: a case report World Journal of Surgical Oncology Springer Nature Link A para aortic malignant melanotic nerve sheath tumor mimicking a gastrointestinal stromal tumor: a rare case report and review of literature BMC Surgery Springer Nature Link Peripheral nerve tumor Wikipedia Malignant melanotic schwannoma of the cervical spinal cord: a case report BMC Neurology Springer Nature Link