Update on Peripheral Nervous System Tumors: Lesions with Epithelioid and Melanotic Features ScienceDirect 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 DoveMed Diagnosis and Treatment of Peripheral and Cranial Nerve Tumors with Expert Recommendations: An EUropean Network for RAre CANcers (EURACAN) Initiative