Pulmonary artery to left atrial fistula.

A patient with type I right pulmonary artery to left atrial fistula is being presented. He had cyanosis with no precordial findings. Diagnosis was made by transoesophageal echocardiography. Simple ligation of the fistula without cardiopulmonary bypass resulted in complete cure. Early operation to prevent complications is highlighted. Transoesophageal findings of the lesion have not been reported in literature.