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Neoplastic nerve lesions.

Deep K Patel1, Kelly G Gwathmey2

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Summary
This summary is machine-generated.

Physicians must recognize rare peripheral nervous system cancers for prompt diagnosis. Early identification of neoplastic infiltration improves treatment and patient outcomes for nerve-related cancers.

Keywords:
Cauda equinaMetastasisNeurolymphomatosisPlexopathySkull base

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Area of Science:

  • Neurology
  • Oncology

Background:

  • Malignant infiltration of the peripheral nervous system (PNS) is uncommon but requires physician awareness for timely diagnosis and treatment.
  • Neoplastic involvement can affect cranial nerves, nerve roots, peripheral nerves, and muscles, presenting with diverse neurological deficits.

Purpose of the Study:

  • To review the clinical presentations, diagnostic evaluation, and treatment strategies for neoplastic involvement of the PNS.
  • To highlight the importance of differentiating neoplastic infiltration from radiation-induced injury.

Main Methods:

  • Review of clinical presentations associated with neoplastic infiltration of cranial nerves, nerve roots, brachial and lumbosacral plexuses, and peripheral nerves.
  • Discussion of diagnostic approaches and treatment modalities.
  • Emphasis on distinguishing neoplastic disease from radiation-induced nerve injury.

Main Results:

  • Skull base metastases often cause distinctive syndromes, commonly linked to breast, lung, and prostate cancers.
  • Nerve root involvement, apart from leptomeningeal carcinomatosis, presents with pain, weakness, and numbness.
  • Plexus infiltration leads to progressive, painful sensory and motor deficits.
  • Neurolymphomatosis presents variably, mimicking demyelinating neuropathies.

Conclusions:

  • Prompt diagnosis and treatment of neoplastic involvement of the PNS are crucial for patient management.
  • Accurate differentiation between neoplastic infiltration and radiation injury is essential for guiding treatment decisions and prognosis.
  • Neurolymphomatosis represents a diagnostic challenge due to its varied presentations.