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Transcatheter closure of aortico right atrial tunnel--a rare cardiac anomaly.

Aortico right atrial tunnel is a rare anomaly with intriguing embryological basis characterized by a tubular communication between the ascending aorta and the right atrium. Few isolated cases reported in literature were often surgically managed on cardiopulmonary bypass. We report a successful transcatheter closure of a large aortico right atrial tunnel in 1 patient with anatomical and technical details.