What is the most common type of tracheoesophageal fistula?

What is the most common type of tracheoesophageal fistula?

• A. Type A
• B. Type B
• C. Type C (IIIB)
• D. Type D

Answer: (C)

The most common pattern of tracheoesophageal fistula is esophageal atresia with a distal fistula to the trachea. In this arrangement, the upper esophagus ends in a blind pouch while the lower esophageal segment remains connected to the trachea via a fistula. This configuration occurs far more often than other variants, such as TEF with only a proximal fistula, TEF with both proximal and distal fistulas, or TEF without esophageal atresia (the H-type). Clinically, the distal fistula allows air to pass from the trachea into the stomach, contributing to the classic presentation and guiding surgical repair to ligate the fistula and restore esophageal continuity. Some textbooks label this pattern as Type C (IIIB), which is just a different classification naming convention.

The most common pattern of tracheoesophageal fistula is esophageal atresia with a distal fistula to the trachea. In this arrangement, the upper esophagus ends in a blind pouch while the lower esophageal segment remains connected to the trachea via a fistula. This configuration occurs far more often than other variants, such as TEF with only a proximal fistula, TEF with both proximal and distal fistulas, or TEF without esophageal atresia (the H-type). Clinically, the distal fistula allows air to pass from the trachea into the stomach, contributing to the classic presentation and guiding surgical repair to ligate the fistula and restore esophageal continuity. Some textbooks label this pattern as Type C (IIIB), which is just a different classification naming convention.