Figures 3-5. (3) Esophageal atresia without fistula (type A). Frontal radiograph shows a radiopaque tube curling into the upper esophageal pouch (arrows). No air is present in the gastrointestinal tract; therefore, there is no distal fistula. (4) Esophageal atresia with lower fistula (type C). On a frontal radiograph, a catheter is seen coiled within the upper esophageal pouch (arrows). Air is also present in the gastrointestinal tract, indicating communication between the lower esophageal segment and the respiratory tree. The bowel dilatation is the result of an imperforate anus associated with esophageal atresia. (5) Tracheoesophageal fistula without atresia (type E). Esophagogram shows a fistula (arrow) arising from the anterior portion of the esophagus (e) and passing cephalad to the posterior portion of the trachea (t).