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  • Title: Traumatic epidural haematoma of the posterior cranial fossa.
    Author: Jang JW, Lee JK, Seo BR, Kim SH.
    Journal: Br J Neurosurg; 2011 Feb; 25(1):55-61. PubMed ID: 20925589.
    Abstract:
    A posterior fossa epidural haematoma (EDH) is uncommon and the diagnosis is difficult because the clinical symptoms are non-specific. Therefore, a computed tomography scan is important for the early diagnosis and management. Thirty-four patients with a posterior fossa EDH were admitted between 2001 and 2008. A retrospective analysis of the clinical and radiographic findings with regard to outcome and prognostic factors was carried out. The Glasgow Coma Scale (GCS) score on admission was recorded to be: one in 3-5, five in 6-8, six in 9-12 and 22 patients in 13-15. The admission GCS score was the most valuable prognostic factor. Among the 28 patients with a GCS score of more than 9, 27 patients survived with good results; for the six patients with a GCS score of less than eight, two patients had good recovery and four patients had unfavourable outcome. The 15 patients that were conservatively treated and 14 out of the 19 patients surgically treated had a good recovery. Among the other surgically treated patients, two were moderately disabled, two remained in a vegetative state and one died (overall mortality 2.9%). An occipital fracture was present in 28 cases. Six patients with a diastatic fracture of the lambdoid suture had a more complicated venous sinus injury requiring early surgery compared to those with a simple linear fracture. The patients admitted with associated intracranial injuries, such as a contrecoup injury including subdural haemorrhage or traumatic subarachnoid haemorrhage had a poor outcome. The initial GCS score on admission and the presence of associated intracranial injuries were important factors associated with the patient prognosis. A diastatic fracture of the lambdoid suture was associated with complicated venous sinus injuries making surgery more difficult.
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