Sustained Meningeal Enhancement Observed on MRI in a Young Infant

Background

Bacterial meningitis in infants can lead to severe complications, including neurological impairment. Despite advancements in treatment, the occurrence of persistent meningeal enhancement post-recovery is often misinterpreted as a sign of infection recurrence, leading to unnecessary interventions.

Data Highlights

No numerical data available.

Key Findings

• A 70-day-old infant exhibited 5-month persistent meningeal enhancement after culture-negative bacterial meningitis.
• Clinical symptoms and CSF parameters normalized following treatment, indicating no active infection.
• Neurodevelopmental assessment showed age-appropriate performance without neurological sequelae.
• Persistent meningeal enhancement may represent a benign post-inflammatory repair process.
• Long-term follow-up is essential to confirm the benign nature of such imaging findings.

Clinical Implications

Clinicians should integrate clinical symptoms, laboratory results, and imaging findings when assessing infants with a history of bacterial meningitis.

Conclusion

Asymptomatic persistent meningeal enhancement in young infants following bacterial meningitis may not indicate treatment failure.

Related Resources & Content

1. Conexiant, Cureus, 2025 -- Meningococcal Abscess Detected by MRI
2. Intensive Care Medicine, 2015 -- Recent Advances in the Prevention of Bacterial Meningitis
3. Infection, 2026 -- Pediatric meningoencephalitis in the molecular diagnostic era: epidemiological insights from 1198 suspected cases in Germany between 2016 and 2024
4. Open Forum Infectious Diseases -- A Systematic Review and Meta-analysis of Metagenomic Next-generation Sequencing for Diagnosing Infectious Meningoencephalitis
5. Executive summary - WHO guidelines on meningitis diagnosis, treatment and care - NCBI Bookshelf
6. Executive summary - WHO guidelines on meningitis diagnosis, treatment and care - NCBI Bookshelf
7. https://ncbi.nlm.nih.gov/books/NBK614845/bin/webannexa-et4.pdf
8. Recommendations - WHO guidelines on meningitis diagnosis, treatment and care - NCBI Bookshelf