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Related Experiment Video

Updated: Mar 1, 2026

Modeling Stroke in Mice: Transient Middle Cerebral Artery Occlusion via the External Carotid Artery
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Acute stroke differential diagnosis: Stroke mimics.

Pedro Vilela1

  • 1Serviço de Neurorradiologia, Hospital Beatriz Ângelo - Loures, Avenida Carlos Teixeira, 3, 2674-514 Loures, Lisbon, Portugal.

European Journal of Radiology
|May 29, 2017
PubMed
Summary

Stroke mimics, non-vascular conditions mimicking stroke, are common in emergency admissions. Imaging like DWI helps differentiate these from actual ischemic stroke, improving diagnosis.

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Area of Science:

  • Neurology
  • Radiology
  • Emergency Medicine

Background:

  • Stroke mimics (SM) are non-vascular conditions presenting as acute neurological deficits, simulating ischemic stroke.
  • These conditions constitute a significant portion of acute stroke hospital admissions.
  • Common clinical mimics include functional disorders, seizures, toxic-metabolic disturbances, tumors, infections, and migraines.

Purpose of the Study:

  • To review the clinical and imaging features of common stroke mimics.
  • To highlight the importance of diagnostic imaging in recognizing stroke mimics.
  • To differentiate stroke mimics from acute ischemic stroke based on imaging findings.

Main Methods:

  • Review of common clinical stroke mimics.
  • Discussion of essential neuroimaging techniques for SM recognition, including Diffusion Weighted Imaging (DWI) and perfusion studies.
Keywords:
Acute ischemic strokeMigrainePosterior Reversible Encephalopathy Syndrome PRESReversible Cerebral Vasoconstriction Syndrome RCVSSeizuresStroke mimicTransient periictal MRI abnormalities TPMA

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  • Analysis of imaging features that can simulate acute ischemic stroke, such as cytotoxic edema and perfusion deficits.

    • Main Results:

    • Stroke mimics present with diverse neurological deficits, often indistinguishable from ischemic stroke clinically.
    • Advanced imaging techniques like DWI and perfusion studies are crucial for identifying SM.
    • Certain disorders exhibit imaging characteristics that closely resemble acute ischemic stroke.

    Conclusions:

    • Accurate diagnosis of stroke mimics is vital to avoid unnecessary stroke treatments and ensure appropriate management.
    • Neuroimaging plays a critical role in distinguishing stroke mimics from true ischemic strokes.
    • Understanding the imaging features of common stroke mimics improves diagnostic accuracy in acute neurological deficit presentations.