Tumors of the peripheral nervous system

Area of Science:

• Oncology
• Neurosurgery
• Genetics

Background:

• Nerve tumors, including schwannomas and neurilemmomas, originate from supporting cells, not nerves themselves.
• Surgical extirpation is the most effective treatment, while radiation therapy provides palliation but not cures.
• Neurofibromatosis (von Recklinghausen's disease) is a genetic disorder associated with increased risk of these tumors.

Purpose of the Study:

• To evaluate the effectiveness of surgical treatment for benign and malignant nerve tumors.
• To assess the outcomes of patients with malignant schwannomas, including those with neurofibromatosis.
• To determine the 10-year survival rates for malignant nerve tumors.

Main Methods:

• Review of 100 patients with malignant neurilemmomas treated by the author.
• Analysis of determinate cases to calculate 10-year "cure" rates.
• Comparison of survival rates between patients with solitary malignant schwannoma and those with neurofibromatosis.

Main Results:

• A 10-year "cure" rate of 32% was observed among 74 determinate cases of malignant neurilemmomas.
• Patients with neurofibromatosis had a 10-year survival rate of 30%, comparable to those with solitary malignant schwannoma (39%).
• Surgical resection, including radical resection and amputation when necessary, is the recommended treatment for malignant tumors.

Conclusions:

• Surgical extirpation is the most effective treatment for nerve tumors, offering the best prognosis.
• Malignant nerve tumors, even in the context of neurofibromatosis, can achieve long-term survival with appropriate surgical management.
• Further research into adjuvant therapies may improve outcomes for malignant schwannoma patients.