Malignant melanotic nerve sheath tumors in the spinal canal of psammomatous and non psammomatous type: Two case reports A) Malignant melanotic nerve sheath tumor (MMNST) composed by Download Scientific Diagram Malignant Peripheral Nerve Sheath Tumor of the Thigh Invading the Superficial Femoral Artery, with Necrotic Lung Metastases as Presenting Symptoms Malignant Peripheral Nerve Sheath Tumor grows in the soft tissues such as muscle, fat, tendons, ligaments, lymph and blood vessels, nerves, and other tissue that connects and supports the body. It also