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Published on: June 18, 2021
Intracranial hypertension secondary to sigmoid sinus compression by group A streptococcal epidural abscess
J P Ludemann1, K Poskitt, A Singhal
1Division of Otolaryngology, British Columbia Children's Hospital and University of British Columbia, British Columbia, Canada. jludemann@cw.bc.ca
Insights
A rare case of severe intracranial hypertension in a child was caused by a Group A Streptococcus epidural abscess compressing the sigmoid sinus. Prompt surgical intervention led to complete symptom resolution without sequelae.
Area of Science:
- Neurology
- Infectious Diseases
- Otolaryngology
Background:
- Intracranial hypertension can arise from various causes, including venous sinus compression.
- Group A Streptococcus (GAS) is a common pathogen, but epidural abscesses are rare complications.
Observation:
- A five-year-old boy presented with severe intracranial hypertension following treatment for acute otitis media and GAS bacteremia.
- Imaging revealed significant compression of the dominant right sigmoid sinus by a small epidural abscess, without evidence of thrombosis.
Findings:
- Surgical decompression of the epidural abscess and debridement of the sigmoid sinus wall resulted in immediate and complete resolution of intracranial hypertension.
- The patient experienced no neurological sequelae during a six-month follow-up period.
Implications:
- This case highlights a novel mechanism of intracranial hypertension: sigmoid sinus compression by an epidural abscess without thrombosis.
- It underscores the critical need for urgent surgical management of such abscesses, even when small and lacking venous thrombosis.
Objective:
We present an extremely rare case of severe intracranial hypertension secondary to sigmoid sinus compression by a group A streptococcal epidural abscess.
Method:
Case report and review of the world literature.
Results:
A five-year-old boy was treated for acute otitis media and group A streptococcal bacteraemia, but subsequently developed severe intracranial hypertension. Computed tomography revealed that, although the sigmoid sinuses were not thrombosed, the patient had a dominant right sigmoid sinus that was almost completely compressed by a small epidural abscess. After surgical decompression of the epidural abscess, with aggressive debridement of the granulation tissue from the sigmoid sinus wall, the patient awoke from general anaesthesia with complete resolution of his symptoms and signs of intracranial hypertension. He suffered no sequelae over the subsequent six months' follow up.
Conclusion:
This is the first reported case of intracranial hypertension due to an epidural abscess causing sigmoid sinus compression without thrombosis. This case illustrates the fact that, even in the absence of thrombosis of the sigmoid sinus, a small epidural abscess may require urgent surgical treatment.
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