We report a case of partial anomalous pulmonary venous return where the right upper and lower pulmonary veins drain into the coronary sinus with right-to-left shunt via patent foramen ovale. To our knowledge, this is the uncommon case where the interatrial septum is intact. The diagnosis was initially made by transthoracic echocardiography and transesophageal echocardiography with the infusion of agitated saline and confirmed by pulmonary artery angiography. Curative operation could not be performed because of the irreversible pulmonary hypertension.