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Related Experiment Videos

Incomplete lacunar infarction (Type Ib lacunes)

G A Lammie1, F Brannan, J M Wardlaw

  • 1Department of Pathology, Edinburgh University, Western General Hospital, UK.

Acta Neuropathologica
|August 15, 1998
PubMed
Summary

Small, deep infarcts (lacunar infarcts) may arise from microvessel lesions, not just occlusive disease. This study identifies distinct histopathological features suggesting incomplete infarction and discusses transient ischemia

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Area of Science:

  • Neurology
  • Pathology
  • Cerebrovascular Disease

Background:

  • The cause of small, deep (lacunar) infarcts is debated, with intrinsic small vessel disease being the leading theory.
  • Existing evidence relies on limited histopathological studies of lacunar infarcts.

Purpose of the Study:

  • To describe a distinct variant of small, microvessel-associated basal ganglia lesions.
  • To differentiate these lesions from classical lacunar infarcts (Types I, II, III).
  • To discuss the pathogenetic significance of these lesions, particularly concerning temporary or moderate ischemia.

Main Methods:

  • Histopathological examination and illustration of a specific type of basal ganglia lesion.
  • Comparative analysis of lesion features against established lacunar infarct classifications.

Main Results:

  • Identification of a microvessel-associated basal ganglia lesion with distinct histopathological features.
  • These lesions exhibit characteristics suggestive of incomplete infarction, differing from classical lacunar infarcts.
  • The findings challenge the sole attribution of lacunar infarcts to occlusive intrinsic small vessel disease.

Conclusions:

  • A variant of small, deep brain lesions distinct from classical lacunar infarcts has been identified.
  • These lesions may represent a state of incomplete infarction.
  • Mechanisms causing temporary or moderately severe ischemia are implicated in their pathogenesis.

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