Fig. 2From: Cathether-based interventional strategies for cor triatriatum in the adult – feasibility study through a hybrid approachIntraoperatively, marked pulmonary venous congestion of the right lung was found (a). After entering the left atrium, a common drainage of the right pulmonary veins was noted, with an obstructing membrane right before the draining orifice, leaving an opening of only 3 mm (b, arrow)Back to article page