Frontiers Case report: A rare case of massive peripheral nerve melanotic schwannoma and review of the literature Malignant Peripheral Nerve Sheath Tumors Basicmedical Key Intracranial Melanotic Schwannomas: Rare and Distinctive Tumors to Know Due to their Risk of Recurrence and Metastases Journal of the Belgian Society of Radiology 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 peripheral nerve sheath tumor (MPNST)