Developmental venous anomaly
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 Discussion of Developmental venous anomaly
- Developmental venous anomalies (DVA) are cerebral vascular malformations that consist of dilated intramedullary veins converging into a large draining vein that reaches either the superficial or the deep system in an area in which there is an absence of normal draining veins.
- DVAs are known to be associated with other developmental vascular anomalies, especially cavernous malformations.
 Imaging Findings for Developmental venous anomaly
- Dilated intramedullary veins converging into a large draining vein producing the Medusa head appearance.
Patient #1: CT and MR images demonstrate a large developmental venous anomaly
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 References for Developmental venous anomaly
- Boukobza, M, Enjolras, O, Guichard, JP, Gelbert, F, Herbreteau, D, Reizine, D, Merland, JJ. Cerebral developmental venous anomalies associated with head and neck venous malformations. AJNR Am J Neuroradiol 1996 17: 987-994.