Journal of Korean Neurosurgical Society

The Korean Neurosurgical Society (대한신경외과학회)
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Immediate Postoperative Epidural Hematomas Adjacent to the Craniotomy Site

  • Jeon, Jin-Soo (Departments of Neurosurgery, College of Medicine, Hallym University) ;
  • Chang, In-Bok (Departments of Neurosurgery, College of Medicine, Hallym University) ;
  • Cho, Byung-Moon (Departments of Neurosurgery, College of Medicine, Hallym University) ;
  • Lee, Ho-Kook (Departments of Neurosurgery, College of Medicine, Hallym University) ;
  • Hong, Seung-Koan (Departments of Neurosurgery, College of Medicine, Dongguk University) ;
  • Oh, Sae-Moon (Departments of Neurosurgery, College of Medicine, Hallym University)
  • Published : 2006.05.30
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Abstract

Objective : The authors present eight cases of immediate post-operative epidural hematomas[EDHs] adjacent to the craniotomy site, describe clinical details of them, and discuss their pathogenesis. Methods : Medical records of eight cases were retrospectively reviewed and their clinical data, operation records, and radiological findings analyzed. Any risk factors of the EDHs were searched. Results : In 5 of 8 cases, adjacent EDHs developed after craniotomies for the surgical removal of brain tumors. Three cases of adjacent EDHs developed after a pterional approach and neck clipping of a ruptured anterior communicating artery aneurysm, a ventriculoperitoneal shunt, and a craniotomy for a post-traumatic EDH, respectively. In all eight cases, brain computed tomography[CT] scans checked immediately or a few hours after the surgery, revealed large EDHs adjacent to the previous craniotomy site, but there was no EDH beneath the previous craniotomy flap. After emergent surgical removal of the EDHs, 7 cases demonstrated good clinical outcomes, with one case yielding a poor result. Conclusion : Rapid drainage of a large volume of cerebrospinal fluid or intra-operative severe brain collapse may separate the dura from the calvarium and cause postoperative EDH adjacent to the previous craniotomy site. A high-pressure suction drain left in the epidural space may contribute to the pathogenesis. After the craniotomy for brain tumors or intracranial aneurysms, when remarkable brain collapse occurs, an immediate postoperative brain CT is mandatory to detect and adequately manage such unexpected events as adjacent EDHs.

Keywords

References

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