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Published on: November 5, 2019
Meningitis due to Fusobacterium necrophorum in an adult
SreeNeelima Garimella1, Aparna Inaparthy, Thomas Herchline
1Department of Internal Medicine, Wright State University School of Medicine, Dayton, Ohio 45409, USA. sngarimetta@hotmail.com
Background:
Fusobacterium necrophorum may cause a number of clinical syndromes, collectively known as necrobacillosis. Meningitis is a significant cause of mortality, rarely reported in the adult population.
Case Presentation:
We report a fatal case of meningitis, caused by Fusobacterium necrophorum, secondary to otitis media in an alcoholic male. Diagnosis was delayed due to the typical slow growth of the organism. The clinical course was complicated by encephalitis and by hydrocephalus. The patient failed to respond to metronidazole and penicillin. The patient died on day 12 from increased intracranial pressure and brain stem infarction.
Conclusions:
This case emphasizes the need for a high index of clinical suspicion to make the diagnosis of Fusobacterium necrophorum meningitis. We recommend the use of appropriate anaerobic culture techniques and antimicrobial coverage for anaerobic organisms when the gram stain shows gram negative bacilli.
Insights
Fusobacterium necrophorum meningitis is rare in adults but can be fatal. Early diagnosis and appropriate anaerobic antimicrobial coverage are crucial for better outcomes in necrobacillosis cases.
Area of Science:
- Infectious Diseases
- Microbiology
- Neurology
Background:
- Fusobacterium necrophorum is a bacterium known to cause necrobacillosis.
- Meningitis caused by this organism is a rare but significant cause of mortality, particularly in adults.
Observation:
- A fatal case of meningitis caused by Fusobacterium necrophorum secondary to otitis media in an adult male is presented.
- Diagnosis was delayed due to the organism's slow growth, and the clinical course was complicated by encephalitis and hydrocephalus.
Findings:
- The patient did not respond to metronidazole and penicillin treatments.
- Death occurred on day 12 due to increased intracranial pressure and brain stem infarction.
Implications:
- This case highlights the importance of a high clinical suspicion for diagnosing Fusobacterium necrophorum meningitis.
- Recommendations include using anaerobic culture techniques and ensuring antimicrobial coverage for anaerobic organisms when Gram-negative bacilli are observed.
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