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          Case Reports
Concentric craniotomy: removal of tumor involving the skull and the intracranial space.
- Berhanu H Michael, Tadese Kebede, Hagos Biluts, Getachew Affefa, Jacob Schneider, and Stephen R Freidberg.
 - Section of Neurosurgery, Department of Surgery, Addis Ababa University, Addis Ababa, Ethiopia.
 - World Neurosurg. 2014 Mar 1;81(3-4):651.e15-6.
 
BackgroundRemoval of a tumor involving both the intracranial space and the skull presents technical challenges. This is especially so if there is a potential for significant hemorrhage due to a hemangioma or a significant attachment to the brain as with a meningioma.Case DescriptionWe describe a technique where the tumor attached to the skull is left undisturbed and a second wider concentric craniotomy exposes normal dura. The entire tumor, both intracranial and that involving the skull and dura, can then be removed as one specimen.ConclusionThe technique we describe, a concentric craniotomy, transforms a difficult operation with the potential for significant hemorrhage into a more standard removal of a convexity tumor.Copyright © 2014 Elsevier Inc. All rights reserved.
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