International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2025
Meningitis caused by Fusobacterium nucleatum complicated with cavernous sinus thrombosis: A case report.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Ariza-Varón Michael, Jaramillo-Arrázola María José, Riveros Laura, Palacio José Manuel, Oviedo Laura
Аннотация
INTRODUCTION: Bacterial meningitis caused by anaerobes, particularly Fusobacterium, is highly unusual. Fusobacterium necrophorum is the most significant pathogen; however, information regarding F. nucleatum meningitis is extremely scarce. We present a case confirmed by culture, complicated by cavernous sinus thrombosis.
CASE REPORT: A 32-year-old man with a history of recent molar extraction, frequent alcohol intake, and cigarette smoking was enrolled in this study. The patient presented with pain in the left maxillary region, fever spikes, photophobia, and horizontal diplopia. Examination revealed left sixth cranial nerve palsy and positive jolt accentuation. Laboratory tests revealed a systemic inflammatory response, and lumbar puncture confirmed neutrophilic meningitis with Fusobacterium nucleatum isolation. Magnetic resonance imaging revealed left cavernous sinus thrombosis requiring anticoagulation. The patient was treated with ceftriaxone + metronidazole, and a follow-up lumbar puncture on day 14 showed biochemical improvement. A 28-day treatment was completed with full recovery.
DISCUSSION: Meningitis is associated with high morbidity and mortality. Anaerobic bacteria account for only 2.4% of cases, usually in immunocompromised or chronically ill patients. Central nervous system infections due to F. nucleatum are rare, usually causing oral dissemination of abscesses. Cerebral venous thrombosis has been described as a complication but remains anecdotal. Metronidazole is the most widely accepted treatment, but evidence on its use as an anticoagulant is still debated.
CONCLUSION: F. nucleatum meningitis may cause cavernous sinus thrombosis in immunocompetent patients. Treatment with metronidazole and anticoagulation can be effective. Few similar cases have been reported.
CASE REPORT: A 32-year-old man with a history of recent molar extraction, frequent alcohol intake, and cigarette smoking was enrolled in this study. The patient presented with pain in the left maxillary region, fever spikes, photophobia, and horizontal diplopia. Examination revealed left sixth cranial nerve palsy and positive jolt accentuation. Laboratory tests revealed a systemic inflammatory response, and lumbar puncture confirmed neutrophilic meningitis with Fusobacterium nucleatum isolation. Magnetic resonance imaging revealed left cavernous sinus thrombosis requiring anticoagulation. The patient was treated with ceftriaxone + metronidazole, and a follow-up lumbar puncture on day 14 showed biochemical improvement. A 28-day treatment was completed with full recovery.
DISCUSSION: Meningitis is associated with high morbidity and mortality. Anaerobic bacteria account for only 2.4% of cases, usually in immunocompromised or chronically ill patients. Central nervous system infections due to F. nucleatum are rare, usually causing oral dissemination of abscesses. Cerebral venous thrombosis has been described as a complication but remains anecdotal. Metronidazole is the most widely accepted treatment, but evidence on its use as an anticoagulant is still debated.
CONCLUSION: F. nucleatum meningitis may cause cavernous sinus thrombosis in immunocompetent patients. Treatment with metronidazole and anticoagulation can be effective. Few similar cases have been reported.