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Related Concept Videos

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Related Experiment Video

Updated: Jun 21, 2026

Nerve Excitability Assessment in Chemotherapy-induced Neurotoxicity
07:42

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Published on: April 26, 2012

An update on nerve biopsy.

Jean-Michel Vallat1, Anne Vital, Laurent Magy

  • 1Centre de Référence National Neuropathies Périphériques Rares, Neurology Department, University Hospital, Limoges Cedex, France. jean-michel.vallat@unilim.fr

Journal of Neuropathology and Experimental Neurology
|July 17, 2009
PubMed
Summary
This summary is machine-generated.

Nerve biopsies are less common due to genetic testing and skin biopsies. However, nerve biopsies remain valuable for diagnosing specific conditions like vasculitis and certain neuropathies when performed by experts.

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Area of Science:

  • Neurology
  • Pathology
  • Genetics

Background:

  • Indications for nerve biopsy have declined over the past two decades.
  • This decrease is attributed to advancements in molecular diagnostic testing for genetic peripheral neuropathies (PNs) and the rise of skin biopsies for small-fiber PN evaluation.

Observation:

  • Nerve biopsies, typically of the sural or superficial peroneal nerve, are crucial for diagnosing vasculitic lesions, sometimes requiring muscle specimens.
  • Specialized techniques including electron microscopy and immunofluorescence are vital for identifying chronic inflammatory demyelinating polyneuropathies, monoclonal gammopathies, and storage diseases.

Findings:

  • Electron microscopy is particularly valuable for diagnosing specific neuropathies and identifying lesions related to monoclonal gammopathies.
  • Analysis of nerve lesions can guide genetic mutation searches in peripheral neuropathies, where over 30 genes can be implicated.

Implications:

  • Despite decreased use, nerve biopsy remains essential in specific diagnostic scenarios, particularly when performed by experienced physicians and analyzed in specialized neuropathology laboratories.
  • Expert interpretation of nerve biopsy findings, including electron microscopy and immunocytochemistry, is critical for accurate diagnosis and targeted genetic analysis in complex neuropathies.