Metastatic Multifocal Malignant Peripheral Nerve Sheath Tumour in the Cervicothoracic Spinal Cord of a Dog Initially Mimicking Meningomyelitis Huge epithelioid malignant peripheral nerve sheath tumor in the left axilla : r MedicalGore Malignant Peripheral Nerve Sheath Tumor of The Orbital Region Arising from Pre Existing Benign Neurofibroma in An Adolescent Patient of Neurofibromatosis Type 1: A Case Report and Review of Literature European Journal Arm malignant peripheral nerve sheath tumour: a rare clinical presentation BMJ Case Reports