• Anne J Schmitt, Alim P Mitha, Rasha Germain, Jennifer Eschbacher, and Robert F Spetzler.
• Department of Neurosurgery, John Radcliffe Hospital, Oxford, United Kingdom.
• World Neurosurg. 2014 Sep 1;82(3-4):535.e1-3.

ObjectiveTo present a case of a cavernous malformation presenting with a subdural hematoma.MethodsA 27-year-old woman was admitted with progressively worsening headache, vomiting, weakness, and word-finding difficulties 1 week after she was discharged from an outside hospital, where she was managed conservatively for a presumed traumatic subdural hematoma. Computed tomography revealed an enlarging subacute left hemispheric subdural hematoma for which she underwent drill craniostomy. Postprocedural magnetic resonance imaging showed a posterior left temporal lobe mass consistent with a cavernous malformation juxtaposed with the subdural hematoma. Craniotomy for resection of the lesion was performed. She had an uncomplicated postoperative course and experienced a good recovery.ResultsThe signs and symptoms, diagnostic imaging, and intraoperative findings suggest that the subdural hematoma was caused by extralesional hemorrhage of the cavernous malformation, which is a rare finding associated with these malformations.ConclusionsThe clinical course, radiologic, and intraoperative findings suggest that the subdural hemorrhage was caused by extralesional hemorrhage of the cavernous malformation.Copyright © 2014 Elsevier Inc. All rights reserved.

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