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Related Experiment Videos

West Nile virus infection.

Imad T Zak1, Deniz Altinok, Joseph R Merline

  • 1Department of Radiology, Wayne State University, Detroit, MI, USA. izak@dmc.org

AJR. American Journal of Roentgenology
|February 25, 2005
PubMed
Summary
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West Nile virus infection is now common in the US. Radiologists should recognize its varied central nervous system imaging appearances, aiding diagnosis and patient care.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Radiology

Background:

  • West Nile virus (WNV) is a mosquito-borne flavivirus.
  • It has become endemic in the United States, posing a significant public health concern.

Purpose of the Study:

  • To review the clinical manifestations of West Nile virus infection.
  • To emphasize the diverse magnetic resonance imaging (MRI) findings associated with WNV infection in the central nervous system (CNS).

Main Methods:

  • Literature review of clinical and neuroimaging studies on West Nile virus.
  • Analysis of MRI findings in patients diagnosed with West Nile virus neuroinvasive disease.

Main Results:

  • Clinical presentation of WNV infection ranges from asymptomatic to severe neuroinvasive disease.

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  • MRI findings are diverse and can include abnormalities in the basal ganglia, thalamus, brainstem, and spinal cord.
  • Common MRI findings include T2/FLAIR hyperintensities, diffusion restriction, and contrast enhancement.

    • Conclusions:

    • West Nile virus infection is an established endemic threat in the US.
    • Familiarity with the spectrum of CNS imaging appearances is crucial for radiologists to accurately diagnose WNV infections.