• A congenital abnormality of the esophagus in which the upper esophagus ends as a blind pouch and does not connect with the lower esophagus; it is often accompanied by a tracheoesophageal fistula. Signs and symptoms in a newborn with this abnormality include excessive salivation, choking, coughing, and the development of cyanosis and respiratory distress when fed.
  NCI
  U.S. National Cancer Institute, 2021
• A developmental defect resulting in complete obliteration of the lumen of the esophagus such that the esophagus ends in a blind pouch rather than connecting to the stomach.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2025
• Congenital abnormality characterized by the lack of full development of the ESOPHAGUS that commonly occurs with TRACHEOESOPHAGEAL FISTULA. Symptoms include excessive SALIVATION; GAGGING; CYANOSIS; and DYSPNEA.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• Esophageal atresia is incomplete formation of the esophagus, frequently associated with tracheoesophageal fistula. Diagnosis is suspected by failure to pass a nasogastric or orogastric tube. Treatment is surgical repair.
  Merck Manuals
  Merck & Co., Inc., 2025
• Oesophageal atresia (OA) encompasses a group of congenital anomalies with an interruption in the continuity of the oesophagus, with or without persistent communication with the trachea.
  NIH Genetic and Rare Diseases
  National Center for Advancing Translational Sciences