Case Report: Transcatheter occlusion of a rare pulmonary artery to left atrium fistula using an atrial septal defect occluder device

A right pulmonary artery to left atrium fistula represents a rare cause of cyanosis in childhood. It may be diagnosed late due to the presence of minimal symptoms. We report the case of a 3-year-old child who presented with dyspnea and cyanosis. Transthoracic echocardiography revealed an anomalous fistulous connection between the right pulmonary artery and a large aneurysm communicating with the roof of the left atrium. The patient underwent successful transcatheter occlusion using an atrial septal defect occluder device. The patient had an uneventful recovery on follow-up with resolution of cyanosis.