Last weekend, the German Interdisciplinary Society for Vascular Anomalies (GISVA) met for its Annual General Meeting in Kassel. In addition to members and the honorary member, Werner Siebert, René Strobach, as representative of the German patient advocacy group Federal Association of Congenital Vascular Malformations (Bundesverband Angeborene Gefäßfehlbildungen e.V.) was also present.