Spinal intramedullary schwannomasreport of a case and extensive review of the literature Neurosurgical Review Springer Nature Link Malignant Melanotic Schwannoma of the Spine Eurorad Spinal Schwannoma Classification Based on the Presumed Origin With Preoperative Magnetic Resonance Images Melanotic schwannoma ScienceDirect Intradural and Intramedullary Melanotic Schwannoma of the Lumbar Spine, After Spinal Anesthesia A case report Psammomatous melanotic schwannoma a rare neck lump The Annals of The Royal College of Surgeons of England