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  • Title: [Developmental venous anomaly (DVA)].
    Author: Zimmer A, Hagen T, Ahlhelm F, Viera J, Reith W, Schulte-Altedorneburg G.
    Journal: Radiologe; 2007 Oct; 47(10):868, 870-4. PubMed ID: 17624510.
    Abstract:
    As congenital anatomic variants of venous drainage, developmental venous anomalies (DVA) represent up to 60% of all cerebral vascular malformations. The prior term "venous angioma" is a misnomer implicating an abnormal vascular structure with an increased bleeding risk. They are often found incidentally and are hardly ever symptomatic. Their morphologic characteristics are dilated vessels in the white matter, which converge on a greater collector vein, forming the typical caput medusae. They drain into the superficial or deep venous system. The frequent association with other, potentially bleeding-prone vascular malformations is clinically relevant, in particular cavernous angioma, which might require therapeutic action. Therefore, coincident vascular lesions need to be actively sought by appropriate additional imaging techniques.
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