Scimitar syndrome and distal tracheoesophageal fistula with esophageal atresia (type III b): a case report of diagnostic and therapeutic approach

Abstract

Scimitar syndrome is a rare congenital heart defect (CHD) manifested by a partial abnormal inflow of pulmonary veins of the right lung into the suprahepatic segment of the inferior vena cava (VCI), making an angiographic image with the right heart edge similar to a Turkish saber (“scimitar”). It is found in only 1 to 3 per 100,000 births. Here we are presenting a patient who, in addition to the basic finding and presentation of a special partial anomalous inflow of pulmonary veins, also had other features of the Scimitar syndrome; dextroposition of the heart, without signs of heterotaxy, hypoplasia of the right lung, aberrant arterial supply of the right lung from the descending aorta (lung sequestration) with all hemodynamic signs of left-right flow (dilated right heart cavity and pulmonary artery), but without pulmonary hypertension. In addition, the patient had esophageal atresia with distal tracheoesophageal fistula (TEF). Treatment included operative occlusion of TEF with termino-terminal esophageal anastomosis. In the further course, esophagography revealed circular esophageal stenosis at the anastomosis site, but without the need for dilatation, which resolved spontaneously. Tracheotomy was needed due to the inability to separate from mechanical ventilation. Considering cardiopulmonary stability and the absence of pulmonary hypertension, a complete cardiosurgical correction was postponed to after the first year of life. The review is exceptional due to the concomitant occurrence of a TEF Vogt type IIIb, because the unusual combination of Scimitar syndrome with such type of TEF has not been described in the literature so far. To our knowledge, there is only one described case report with an H-type of TEF.