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Journal of Korean Neurosurgical Society 1992;21(1): 49-57.
Delayed Post-traumatic Extradural Hematomas: Delayed Bleeding & Delayed Expansion.
Jowa Hyuk Ihm
Department of Neurosurgery, Daejeon Sungsim Hospital, Daejeon, Korea.
Delayed traumatic extradural hematoma is a new pathological dimension. Thirteen patients with delayed traumatic extradural hematoma were seen 70 treated cases of extradural hematomas for a frequency of 18.6%. The hematomas were insignificant or not present on the initial CT scanning. All patients had a skull fracture at the site of delayed extradural hematoma formation. Ten hematomas were surgically evacuated and three were reabsorbed spontaneously. Repeated CT scanning was performed if the patient has any new focal neurological deficits or clinical status was not improved despite of minimal extradural hematoma after head injury. Delayed extradural hematoma were classified into two groups based on the presence of hematoma in initial CT scan : delayed bleeding type(newly formed xtradural hematoma/4 cases : 5.7%) & delayed expansion type(enlargement of initial thin hematoma/9 cases : 12.6%).
Key Words: Delayed bleeding or expansion; Extradural hematoma; Head injury; Skull fracture; Repeated CT scan
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