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Published on: February 9, 2011
Giant subdural empyema in a child: a case report
Tufan Hicdonmez1, Bilge Cakir, M Kemal Hamamcioglu
1Department of Neurosurgery, Trakya University Faculty of Medicine, Edirne 22030, Turkey. tufanhicdonmez@yahoo.com
Abstract:
An unusual case of a giant (8 x 6 x 6 cm) frontoparietal SDE of Streptococcus pneumoniae in a 17-month-old child is reported. The initial diagnosis was made with emergency CT. The purulent material was removed via a frontoparietal craniotomy. A series of postoperative MR imaging showed the gradual reduction in size of the lesion, although collapsed capsule, fibrous thickening of meningeal structures and associated displacement of the underlying brain persisted. The child was symptom-free in a follow-up period of 15 months. This case showed that SDE may reach a giant size and thus may mimic an intra-axial lesion; the coronal MR imaging is a more reliable diagnostic tool than the emergency axial CT in giant SDE of upper convexity localization, and the clinical improvement may be more impressive than the radiological changes.
Insights
A rare, giant Streptococcus pneumoniae subdural empyema (SDE) in a child mimicked an intra-axial lesion. Coronal MRI proved superior to CT for diagnosis, and clinical recovery surpassed imaging improvements.
Area of Science:
- Pediatric Neurosurgery
- Infectious Diseases
- Neuroradiology
Background:
- Subdural empyema (SDE) is a serious intracranial infection.
- Giant SDEs are rare and can present diagnostic challenges.
Observation:
- A case of an 8 x 6 x 6 cm frontoparietal SDE caused by Streptococcus pneumoniae in a 17-month-old child.
- Initial diagnosis was made via emergency CT scan.
- Surgical drainage of purulent material was performed via frontoparietal craniotomy.
Findings:
- Postoperative MRI demonstrated gradual lesion size reduction.
- Persistent findings included a collapsed capsule, meningeal thickening, and brain displacement.
- The child remained symptom-free at 15-month follow-up.
Implications:
- Giant SDEs can mimic intra-axial brain lesions.
- Coronal MRI is more reliable than axial CT for diagnosing giant SDEs in the upper convexity.
- Clinical improvement can be more significant than radiological changes in SDE management.
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