Vols. Videos

Developmental Venous Anomaly

Last Updated: October 1, 2018

Figure 1: Axial susceptibility-weighted image (SWI) reveals a cluster of hypointense vessels emerging from the right frontal lobe cortex and deep white matter and draining into an anomalous, asymmetrically enlarged cortical vein.

Overview

Developmental venous anomalies (DVAs), also known as venous angiomas in the literature, are mature venous structures with abnormal (anomalous), but non-pathologic, drainage patterns. These frequently coexist with cavernous malformations, capillary malformations, and venolymphatic malformations, but are usually not anatomically related. DVAs have been implicated in epilepsy, sometimes in association with areas of cortical dysplasia.

Imaging

  • Umbrella-like configuration of enlarged medullary veins seen converging (draining) into an enlarged vein, eit...