Epithelioid Malignant Peripheral Nerve Sheath Tumor in the Liver: Report of a Rare Unusual Case with Rhabdoid Morphology and Review of the Literature Van Treeck 2022 Case Reports in Malignant Peripheral Nerve Sheath Tumors Basicmedical Key Pathology Outlines Malignant melanotic nerve sheath tumor Peripheral nerve tumors Symptoms and causes Mayo Clinic Malignant Nerve Sheath Tumor of the Spinal Accessory Nerve: A Unique Presentation of a Rare Tumor