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Delayed radiation-induced damage to the brachial plexus
Clinical and Experimental Neurology
|January 1, 1978
Summary
Radiation therapy for breast cancer can lead to delayed brachial plexus neuropathy, a rare condition affecting the arm and hand. This study highlights the long latency period and diagnostic challenges, noting no current effective treatments.
Area of Science:
- Neurology
- Oncology
- Radiotherapy
Background:
- Brachial plexus neuropathy is a potential complication following radiation therapy.
- Radiation-induced nerve damage can manifest years after treatment.
- Understanding delayed neuropathies is crucial for patient management.
Observation:
- Three breast cancer patients developed brachial plexus neuropathy after radiation.
- Symptoms included painless, progressive sensory and motor deficits, particularly in the hand.
- A significant latency period of 8, 15, and 15 years was observed between radiation and neuropathy onset.
Findings:
- The neuropathy presented insidiously with slowly progressing symptoms.
- Two patients were initially misdiagnosed with carpal tunnel syndrome.
- The long latency period suggests a slow degenerative process in the brachial plexus.
Implications:
- This case series emphasizes the importance of considering radiation-induced brachial plexus neuropathy in patients with a history of radiotherapy.
- Delayed diagnosis can be avoided by maintaining a high index of suspicion.
- Further research into the mechanisms and potential treatments for this delayed neuropathy is warranted.