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Related Experiment Video

Updated: Jun 24, 2026

A Stably Established Two-Point Injection of Lysophosphatidylcholine-Induced Focal Demyelination Model in Mice
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[Cholesterol crystal emboli presenting as a mononeuropathy].

T Deneuville1, Y Tance, K Tiev

  • 1Service de médecine interne, hôpital Saint-Antoine, université Pierre-et-Marie-Curie, 184 rue du Faubourg-Saint-Antoine, Paris cedex, France.

La Revue De Medecine Interne
|March 17, 2009
PubMed
Summary

Cholesterol crystal embolism can cause lower limb mononeuropathy, mimicking other conditions. Neuromuscular biopsy is crucial for accurate diagnosis when other tests are inconclusive.

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Area of Science:

  • Vascular Medicine
  • Neurology
  • Pathology

Background:

  • Cholesterol crystal embolism (CCE) is a rare complication often seen in patients with widespread atherosclerosis, typically after vascular procedures.
  • It can manifest with diverse symptoms, making early diagnosis challenging.
  • Differentiating CCE from other vasculitides, such as polyarteritis nodosa, is critical for appropriate management.

Observation:

  • A case report of a 93-year-old patient presenting with lower limb mononeuropathy is detailed.
  • Initial investigations, including ophthalmoscopy and livedo biopsy, yielded normal results.
  • The patient's condition was ultimately diagnosed via neuromuscular biopsy.

Findings:

  • Neuromuscular biopsy confirmed cholesterol crystal embolism as the cause of the patient's mononeuropathy.
  • This finding highlights mononeuropathy simplex or multiplex as a potential clinical presentation of CCE.
  • The diagnosis was established despite negative findings from prior investigations.

Implications:

  • Cholesterol crystal embolism should be considered in the differential diagnosis of mononeuropathy, particularly in elderly patients with vascular risk factors or recent procedures.
  • Neuromuscular biopsy serves as a definitive diagnostic tool when less invasive methods are inconclusive.
  • Accurate diagnosis of CCE is essential to guide treatment and prevent further embolic events.