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Interhemispheric Subdural Hematoma

Published online by Cambridge University Press:  18 September 2015

Neville A. Russell*
Affiliation:
Division of Neurosurgery and the Department of Diagnostic Radiology, Ottawa Civic Hospital and the University of Ottawa, Ottawa, Ontario
Raquel del Carpio-O'Donovan
Affiliation:
Division of Neurosurgery and the Department of Diagnostic Radiology, Ottawa Civic Hospital and the University of Ottawa, Ottawa, Ontario
K.B. Mallya
Affiliation:
Division of Neurosurgery and the Department of Diagnostic Radiology, Ottawa Civic Hospital and the University of Ottawa, Ottawa, Ontario
Brien G. Benoit
Affiliation:
Division of Neurosurgery and the Department of Diagnostic Radiology, Ottawa Civic Hospital and the University of Ottawa, Ottawa, Ontario
Gary Belanger
Affiliation:
Division of Neurosurgery and the Department of Diagnostic Radiology, Ottawa Civic Hospital and the University of Ottawa, Ottawa, Ontario
*
Suite 606, 1081 Carling Avenue, Ottawa, Ontario K1Y 4G2
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Abstract:

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Although relatively uncommon, interhemispheric subdural hematoma (ISDH) occurs more frequently than was suspected before the advent of computerized tomographic (CT) scanning. When its mass is sufficiently large to compress the medial cerebral hemisphere, specific focal neurological abnormalities may occur. These include weakness of the contralateral leg, or contralateral hemiparesis with the leg being weaker than the arm. On the unenhanced CT scan ISDH is seen as a crescent shaped, midline hyperdensity. Treatment is dictated by the clinical course. Evacuation of the hematoma by parasagittal craniotomy is recommended if the symptoms are pronounced.

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Original Articles
Copyright
Copyright © Canadian Neurological Sciences Federation 1987