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Nerve Ultrasound Protocol to Detect Dysimmune Neuropathies
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Diagnostic challenges in chronic inflammatory demyelinating polyradiculoneuropathy.

Filip Eftimov1, Ilse M Lucke1, Luis A Querol2,3

  • 1Department of Neurology and Clinical Neurophysiology, Amsterdam Neuroscience, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands.

Brain : a Journal of Neurology
|November 6, 2020
PubMed
Summary

Diagnosing chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is challenging due to varied symptoms and diagnostic limitations. This review explores pitfalls and emerging tests like nerve ultrasound for improved accuracy in identifying this autoimmune nerve disease.

Keywords:
CIDPdiagnostic accuracydiagnostic pitfallsmisdiagnosisunderdiagnosis

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Area of Science:

  • Neurology
  • Immunology
  • Peripheral Nervous System Disorders

Background:

  • Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is a group of autoimmune disorders affecting peripheral nerves, leading to weakness and sensory issues.
  • Accurate diagnosis of CIDP is often difficult due to its varied presentation, resulting in common mis- and underdiagnosis.
  • Nerve conduction studies (NCS) are essential for diagnosis but have limitations, including interpretational challenges and lack of specificity.

Purpose of the Study:

  • To review the diagnostic challenges and pitfalls in identifying CIDP.
  • To evaluate the utility of established and emerging diagnostic tests for CIDP.
  • To discuss the role of new diagnostic tools, such as nerve ultrasound and autoantibody testing, in improving CIDP diagnosis.

Main Methods:

  • Review of existing literature on CIDP diagnostic criteria and methods.
  • Analysis of the limitations of current electrodiagnostic criteria (NCS).
  • Discussion of supplementary diagnostic tests including CSF examination, MRI, nerve biopsy, and somatosensory evoked potentials.
  • Exploration of novel diagnostic approaches like nerve ultrasound and autoantibody testing.

Main Results:

  • NCS findings suggestive of demyelination are required for CIDP diagnosis but are not always specific or sufficient for detection.
  • Evidence supporting supplementary diagnostic tests is often limited, with small studies and lack of control groups.
  • No single diagnostic test is entirely specific for CIDP, necessitating careful interpretation of results.
  • Emerging tests like nerve ultrasound and autoantibody testing show potential but are not yet standard guidelines.

Conclusions:

  • Diagnosing CIDP remains challenging due to heterogeneous presentations and limitations in current diagnostic tools.
  • Careful interpretation of electrodiagnostic and other test results is crucial.
  • Newly introduced diagnostic tests, including nerve ultrasound and autoantibody testing, warrant further investigation for their role in improving CIDP diagnosis and management.