• Neurocritical care · Feb 2011

    Case Reports

    Non-aneurysmal perimesencephalic subarachnoid hemorrhage caused by a cavernous angioma.

    • Shadi Yaghi, Sowmini Oomman, and Salah G Keyrouz.
    • Department of Neurology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
    • Neurocrit Care. 2011 Feb 1;14(1):84-5.

    BackgroundCavernous angiomas are responsible for intracranial hemorrhages, but bleeding is infrequently confined to the subarachnoid space.MethodsWe describe an elderly, yet healthy man who sought medical attention for subarachnoid hemorrhage.ResultsVascular imaging failed to reveal a cerebral aneurysm, however magnetic resonance imaging done late in the course showed a cavernous angioma, on the surface of the left upper cerebellar peduncle, that had bled.ConclusionsThe so-called "angiography-negative" subarachnoid hemorrhage could have its source in small cavernous angiomas lying on the surface of basal skull brain structures.

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