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    Ann Neurol. 2005 Sep;58(3):459-62.

    Spatial clustering of hemorrhages in probable cerebral amyloid angiopathy.

    Rosand J, Muzikansky A, Kumar A, Wisco JJ, Smith EE, Betensky RA, Greenberg SM.

    Vascular and Critical Care Neurology, Massachusetts General Hospital, Boston, MA 02114, USA. jrosand@partners.org

    Comment in:

    Cerebral amyloid angiopathy (CAA) is a common cause of symptomatic intracerebral hemorrhage (ICH), as well as small asymptomatic hemorrhage in the elderly. We used gradient-echo MRI to analyze spatial distribution of 321 hemorrhages in 59 patients with probable CAA-related ICH. Hemorrhagic lesions were found preferentially in the temporal (ratio of actual to expected hemorrhages = 1.37) and occipital lobes (ratio = 1.45, p < 0.0001). Within individuals, hemorrhages tended to cluster, regardless of lobe (p < 0.0001). Among subjects followed prospectively for recurrence, clustering of new symptomatic and asymptomatic hemorrhages was observed. These data suggest that regional differences within the brain play a role in the development of CAA-related hemorrhage.

    PMID: 16130107 [PubMed - indexed for MEDLINE]

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