Malignant melanotic nerve sheath tumors in the spinal canal of psammomatous and non psammomatous type: Two case reports Malignant Melanotic Nerve Sheath Tumor of the Neck: A Case Report Applied Radiation Oncology Extramedullary malignant melanotic schwannoma of the spine: Case report and an up to date systematic review of the literature ScienceDirect Rare Forms of Melanoma and Melanocytic Tumors IntechOpen Since melanoma develops on the skin, it can often be seen without special tests. Regular skin self exams and professional skin checks by a dermatologist can help detect melanoma early, when