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Superimposed propionibacterium acnes subdural empyema in a patient with chronic subdural hematoma
Jong Hun Kim1, Chul-Hee Lee, Soo Hyun Hwang
1Department of Neurosurgery, Gyeongsang National University School of Medicine, Jinju, Korea.
Abstract:
The authors present a case of subdural empyema in a macrocephalic patient. A 23-year-old male was admitted due to headache and fever. One month ago, he had mild head injury by his coworkers. Physical examination showed a macrocephaly and laboratory findings suggested purulent meningitis. Neuroimaging studies revealed a huge size of epidural space-occupying lesion. Under the impression of epidural abscess, operation was performed. Eventually, the lesion was located at subdural space and was proven to be subdural empyema. Later, histological examination of the specimen obtained by surgery demonstrated finings consistent with the capsule of the chronic subdural hematoma. Two weeks after operation, Propionibacterium acnes was isolated. The intravenous antibiotics were used for total of eight weeks under monitoring of the serum level of the C-reactive protein. Follow-up brain computed tomography (CT) scan showed the presence of significant amount of remaining subdural lesion. However, he has complained of minimal discomfort. It is suggested that the subdural empyema occurred with preexisting chronic subdural hematoma after head injury about one month prior to admission and it took a long time to treat Propionibacterium acnes subdural empyema with systemic antibiotics, at least over eight weeks.
Insights
This case study highlights a rare subdural empyema in a macrocephalic patient, likely stemming from a chronic subdural hematoma. Long-term antibiotic treatment was required for this Propionibacterium acnes infection.
Area of Science:
- Neurology
- Infectious Diseases
- Neurosurgery
Background:
- Subdural empyema is a rare but serious intracranial infection.
- Macrocephaly can present diagnostic challenges in neurological cases.
- Chronic subdural hematomas are collections of blood that can predispose to infection.
Observation:
- A 23-year-old male with macrocephaly presented with headache and fever post-head injury.
- Initial imaging suggested an epidural abscess, but surgery revealed a subdural empyema.
- Histology indicated a coexisting chronic subdural hematoma capsule.
Findings:
- Propionibacterium acnes was identified as the causative agent of the subdural empyema.
- Treatment involved eight weeks of intravenous antibiotics with C-reactive protein monitoring.
- Follow-up CT showed residual subdural lesion, though the patient experienced minimal symptoms.
Implications:
- Subdural empyema can arise secondary to chronic subdural hematoma, particularly after head trauma.
- Propionibacterium acnes subdural empyema necessitates prolonged antibiotic therapy.
- This case underscores the importance of considering subdural empyema in patients with pre-existing subdural collections and neurological symptoms.
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