Malignant tumor of the peripheral nerve sheaths of the right shoulder

Malignant peripheral nerve sheath tumors are soft tissue sarcomas that develop from peripheral nerve sheath cells (T. Hirose, B.W. Scheithauer). These tumors are characterized by aggressive growth with an unfavorable outcome and may develop de novo or through malignant transformation of schwannomas, neurofibromas, or ganglioneuromas. In the article, the authors presented a case of malignant neoplasm of the peripheral nerve sheaths of the right shoulder.