Developmental venous anomalies--two cases with venous thrombosis.

Developmental venous anomalies (DVA) are generally considered the most common vascular anomalies. They are usually asymptomatic and display a benign clinical course. We report two cases of thrombosed developmental venous anomalies. Both patients developed venous infarcts with haemorrhagic transformation from the thrombosed DVA, and 1 patient needed decompressive craniectomy.