Surgical Neurology International Pathology Outlines Malignant melanotic nerve sheath tumor Intramedullary schwannoma of conus medullaris: rare site for a common tumor with review of literature Spinal Cord Series and Cases Primary spinal melanoma of extramedullary origin: a report of three cases and systematic review of the literature Spinal Cord Series and Cases A Rare Case of Aggressive Melanotic Schwannoma Occurred in Spinal Nerve of a 59 Year Old Male