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AJNR Am J Neuroradiol. 2010 Feb;31(2):377-82. doi: 10.3174/ajnr.A1822. Epub 2009 Oct 15.

Familial versus sporadic cavernous malformations: differences in developmental venous anomaly association and lesion phenotype.

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1
Department of Pediatrics, University of New Mexico Health Sciences Center, Albuquerque, NM 87131-0001, USA.

Abstract

BACKGROUND AND PURPOSE:

CCMs are commonly associated with DVAs, but the incidence of association in familial CCM is unknown. The presence of a DVA significantly complicates surgical management of a CCM because of the risk of compromised venous drainage. In this investigation, we compared the incidence of a DVA in the presence of a CCM in sporadic and familial CCM cases comprising predominantly familial CCM with the Southwestern US common Hispanic mutation (or Q455X mutation) of CCM1.

MATERIALS AND METHODS:

Retrospective review was performed of 112 patients identified with CCM. MR imaging review included the presence or absence of a DVA and number, location, size, and signal-intensity characteristics of CCMs. Record review included patient and family history and documented genetic mutations. Statistical analysis was performed by using the Fisher exact and 2-sample t tests.

RESULTS:

Eighty-one cases were familial, 18 were sporadic, and 13 were indeterminate. There were a total of 2212 CCMs: 2176, 21, and 15 in the familial, sporadic, and indeterminate groups, respectively. There was a close association of CCM and DVA (an apparent combined vascular lesion) in 8 of 18 (44%) sporadic cases and only 1 possible such association in the familial cases. The difference was highly statistically significant (P < .0001).

CONCLUSIONS:

Familial CCMs are unlikely to be associated with DVAs, and sporadic CCMs have a high rate of association with DVA. This difference in imaging features of familial and sporadic CCMs suggests the possibility of a different developmental mechanism.

PMID:
19833796
PMCID:
PMC4455949
DOI:
10.3174/ajnr.A1822
[Indexed for MEDLINE]
Free PMC Article
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