Huge epithelioid malignant peripheral nerve sheath tumor in the left axilla : r MedicalGore Intracranial metastasis from a malignant peripheral nerve sheath tumor in a patient with neurofibromatosis type 1: A case study and literature review ScienceDirect Fungating malignant peripheral nerve sheath tumor arising from a slow growing mass in the forearm: a case report and review of the literature Journal of Medical Case Reports Springer Nature Link Frontiers Case report: A rare case of massive peripheral nerve melanotic schwannoma and review of the literature