Pure Tracheoesophageal Fistula (H-type)

Pure Tracheoesophageal Fistula (H-type) is a rare birth defect affecting the throat and esophagus, the tubes that carry air to the lungs and food to the stomach. In this condition, there is an abnormal connection between the windpipe (trachea) and the food pipe (esophagus), which can cause food or liquids to enter the lungs. This can lead to coughing, choking, and breathing problems during feeding. The condition does not involve a blockage of the esophagus, so babies can swallow normally but may have repeated lung infections. It primarily affects the respiratory and digestive systems and requires medical evaluation to prevent complications.

Pure Tracheoesophageal Fistula (H-type) is a congenital anomaly characterized by an isolated abnormal connection between the trachea and esophagus without esophageal atresia. It results from incomplete separation of the foregut during embryonic development. This fistula allows passage of swallowed material into the respiratory tract, causing aspiration pneumonia, recurrent respiratory infections, and feeding difficulties. Unlike other types of tracheoesophageal fistulas, the esophagus remains patent, so symptoms may be subtle and diagnosis delayed. The condition is significant due to the risk of chronic lung damage and failure to thrive if untreated. It is often diagnosed in infancy or early childhood based on clinical suspicion and imaging.