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  • Title: Interhemispheric subdural hematoma.
    Author: Russell NA, del Carpio-O'Donovan R, Mallya KB, Benoit BG, Belanger G.
    Journal: Can J Neurol Sci; 1987 May; 14(2):172-4. PubMed ID: 3607622.
    Abstract:
    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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