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Related Experiment Videos

Brain stem hypertensive encephalopathy evaluated by line scan diffusion-weighted imaging.

Motonori Nagata1, Masayuki Maeda, Hirokazu Tsukahara

  • 1Department of Radiology, Mie University School of Medicine, Tsu, Mie, Japan.

AJNR. American Journal of Neuroradiology
|May 14, 2004
PubMed
Summary

Hypertensive encephalopathy can affect the brain stem, a rare presentation. Magnetic resonance (MR) imaging revealed reversible brain stem lesions that resolved with blood pressure control.

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Area of Science:

  • Neurology
  • Radiology
  • Neuroimaging

Background:

  • Hypertensive encephalopathy (HE) is a neurological emergency.
  • It typically affects supratentorial regions.
  • Brain stem involvement is rare.

Observation:

  • A case of HE with predominant brain stem involvement is presented.
  • Magnetic resonance (MR) imaging was utilized for diagnosis.
  • Fluid-attenuated inversion-recovery (FLAIR) and T2-weighted images showed extensive hyperintensity in the brain stem.

Findings:

  • Lesions in the brain stem demonstrated increased apparent diffusion coefficient (ADC) on line scan diffusion-weighted imaging.
  • These MR imaging findings were reversible.
  • Clinical symptoms and imaging abnormalities resolved upon controlling hypertension.

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Implications:

  • This case highlights a rare presentation of hypertensive encephalopathy.
  • MR imaging, particularly diffusion-weighted imaging, is crucial for diagnosing brain stem involvement in HE.
  • Prompt blood pressure management is essential for reversing neurological deficits.