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The earliest manifestation of focal encephalitis on diffusion-weighted MRI
Rabin Katan Nouranifar1, Muhammad Ali, Jaya Nath
1Department of Radiology, SUNY Brooklyn Health Science Center, 450 Clarkson Avenue, Brooklyn, NY 11203, USA.
Abstract:
We report the case of an adult patient with a focus of meningioencephalitis in whom the earliest magnetic resonance imaging (MRI) manifestation was hyperintense signal on diffusion-weighted (DW) sequence only. To our knowledge, this is the first adult encephalitis case to be reported with the MRI diffusion-weighted pulse sequence being the only positive MRI finding. A brief review of the pertinent literature is included.
Insights
This case study highlights a unique adult encephalitis presentation where diffusion-weighted MRI was the sole initial indicator. This finding is crucial for early diagnosis of meningoencephalitis.
Area of Science:
- Neurology
- Radiology
- Infectious Diseases
Background:
- Meningoencephalitis is an inflammation of the brain and meninges.
- Early diagnosis is critical for effective treatment and improved patient outcomes.
- Magnetic Resonance Imaging (MRI) is a key diagnostic tool for neurological conditions.
Observation:
- An adult patient presented with meningoencephalitis.
- The earliest diagnostic finding was an abnormal signal on diffusion-weighted (DW) MRI sequences.
- No other MRI abnormalities were initially detected.
Findings:
- Diffusion-weighted imaging (DWI) revealed hyperintensity, indicating restricted diffusion.
- This DWI finding was the only positive MRI sign in the early stages of the disease.
- This represents the first reported adult case of encephalitis with DWI as the sole initial MRI finding.
Implications:
- Highlights the sensitivity of DWI in detecting early encephalitis.
- Suggests DWI should be carefully evaluated in suspected cases, even with normal conventional MRI sequences.
- Emphasizes the importance of considering DWI findings for timely diagnosis and management of meningoencephalitis.