Pathology Outlines Malignant melanotic nerve sheath tumor 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 Frontiers Case report: A rare case of massive peripheral nerve melanotic schwannoma and review of the literature Malignant melanotic nerve sheath tumor Radiology Reference Article Radiopaedia.org Primary Psammomatous Melanotic Schwannoma of the Spine ScienceDirect Schwannoma DoveMed