Fig. 2From: Transthoracic echocardiography-monitored CO2-insufflation esophageal endoscopy for diagnosis of Atrioesophageal fistula and prevention of iatrogenic air embolism: a case reportEsophageal endoscopy: a 5-mm fistula with active bleeding localized on the anterior esophageal wall (black arrow); Intraoperative photograph: b 10-mm atrial defect near the left inferior pulmonary vein (white arrow)Back to article page