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[Pathognomonic magnetic resonance imaging (MRI) finding of fluid-fluid level in pyogenic ventriculitis: two case

Masahiro Hatakeyama1, Masato Kanazawa, Ayako Ishihara

  • 1Department of Neurology, Brain Research Institute, Niigata University.

Rinsho Shinkeigaku = Clinical Neurology
|October 7, 2014
PubMed

Insights

Pyogenic ventriculitis, a severe brain infection, can be diagnosed with a unique MRI finding: fluid-fluid levels in ventricles. Early recognition and antibiotic treatment improve patient outcomes.

Area of Science:

  • Neuroimaging
  • Infectious Diseases
  • Radiology

Background:

  • Pyogenic ventriculitis is a rare but life-threatening central nervous system infection.
  • Delayed diagnosis due to non-specific symptoms can lead to poor outcomes.
  • Brain MRI is crucial for diagnosing pyogenic ventriculitis.

Observation:

  • Two patients presented with pyogenic ventriculitis and a distinctive MRI finding.
  • MRI revealed intraventricular hyperintense lesions with fluid-fluid levels on diffusion-weighted images (DWIs) and hypointense lesions on T2-weighted images (T2WIs).
  • Associated findings included otitis media, multiple ring-enhancing lesions, and pontine infarction in the patients.

Findings:

  • A pathognomonic MRI finding for pyogenic ventriculitis is intraventricular hyperintense lesions on DWIs and hypointense lesions on T2WIs with a fluid-fluid level.
  • This specific MRI signature has not been previously reported in other conditions.
  • Prompt diagnosis based on these MRI features is essential.

Implications:

  • Early recognition of characteristic MRI findings can facilitate timely diagnosis of pyogenic ventriculitis.
  • Initiating high-dose, appropriate antibiotic therapy early in the disease course is critical.
  • Effective treatment leads to the resolution of intraventricular abnormalities and complete remission.

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