Peripheral nerve sheath tumors are masses arising from nervous tissue; the specific cell origin is often not identifiable. They have variable histologic characteristics of malignancy, but often cause considerable local invasion and have a low rate of distant metastasis.
The appearance of the lesions of the malignant peripheral nerve sheath tumors is white, firm nodules. The development of the malignant peripheral nerve sheath tumors leads to potential damage. The malignancy is not spread through the lymphatic system.
Mar 07, 2017 · The location of your benign nerve sheath tumor plays an important role in determining whether removal is necessary. Benign nerve sheath tumors often grow within the spinal canal and can compress spinal nerves or the spinal cord. In these situations even small tumors can cause big problems. Peripheral nerve sheath tumor is the term that has been proposed to include schwannomas, neurofibromas (nerve fiber tumors), neurofibrosarcomas (malignant nerve fiber tumors), and hemangiopericytoma (tumor of blood vessels and soft tissue), since they are all believed to arise from the same cell type.
May 01, 2003 · Malignant peripheral nerve sheath tumor is the current term used by the World Health Organization for this highly aggressive tumor. MPNSTs may arise from plexiform neurofibromas, de novo or secondary to radiation therapy ( , 5 , , 7 ). Nerve sheath tumors often are benign tumors that occur in the peripheral nervous system. Overall, the nervous system is made up of two parts, the central nervous system, and the peripheral nervous system.