Traumatic interhemispheric subdural hematomas.

Abstract

Two cases of traumatic interhemispheric subdural hematoma are reported. The first patient had combined convexity and parasagittal subdural hematomas; the second patient had an interhemispheric subdural hematoma which extended over the tentorium. Although most reported cases have followed a subacute clinical course with characteristic lower-extremity monoparesis, both our patients deteriorated rapidly 24 and 48 hours after the injury without warning neurologic signs and died in spite of prompt surgical treatment. Both cases were diagnosed with computerized axial tomography (CT). This examination is particularly valuable in defining the extent of the hematoma and its possible association with other lesions.