Abstract
Interhemispheric subdural hematoma (IHSDH) usually manifests itself in a delayed fashion after trauma as a slow neurological deterioration with signs of the falx syndrome (paresis or seizures of the lower extremity contralateral to the hematoma). Several etiologies of IHSDH have been described, with tearing of bridging veins being especially associated with trauma. We present the second reported case of IHSDH due to traumatic arterial laceration. This lesion demonstrates a benign and delayed initial presentation. Conservative observation has been employed in the past with mixed results. Patients receiving early definitive surgical treatment have a lower mortality rate then those treated similarly having convexity SDHs. This review of 31 cases discusses the salient aspects of this clinical entity, emphasizing the need for prompt diagnosis and treatment, despite the patient's seemingly stable neurological status.
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