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[Radiation-induced neuropathies. Experimental and clinical data]
P F Pradat1, M Poisson, J Y Delattre
1Service de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris.
Revue Neurologique
|October 1, 1994
Summary
Peripheral nerves, often considered radioresistant, can suffer injury from radiation therapy. Research is ongoing to understand the unclear pathophysiology, which may involve vascular changes, direct nerve damage, or compression from fibrosis.
Area of Science:
- Neuroscience
- Oncology
- Radiology
Context:
- Peripheral nerves are generally considered radioresistant, contrary to the central nervous system.
- However, clinical and experimental evidence indicates peripheral nerve injury following radiation therapy.
- The exact mechanisms of radiation-induced peripheral nerve damage are not fully understood.
Purpose:
- To review the current understanding of radiation-induced peripheral nerve injury.
- To discuss the potential pathophysiological mechanisms involved.
- To highlight clinical manifestations and outcomes.
Summary:
- Radiation therapy can cause peripheral nerve damage, including cranial nerves, roots, plexus, and nerve trunks.
- Potential mechanisms include vascular alterations, direct axonal or Schwann cell damage, and nerve compression due to radiation fibrosis.
- A distinct early, reversible plexopathy syndrome exists alongside the classic progressive form.
Impact:
- Clarifies the pathophysiology of radiation-induced peripheral nerve injury, aiding in risk assessment and management.
- Distinguishes between different clinical presentations of radiation-induced plexopathy.
- Informs clinical practice regarding the potential for peripheral nerve complications after radiotherapy.