Peripheral Nerve Sheath Tumors of the Orbit Springer Nature Link 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 Malignant Melanotic Nerve Sheath Tumor of the Neck: A Case Report Applied Radiation Oncology Malignant peripheral nerve sheath tumour (MPNST) Soft tissue sarcoma Cancer Research UK Melanotic Neuroectodermal Tumor of Infancy Psammomatous Melanotic Schwannoma