Residual tracheal diverticulum after repair of tracheoesophageal fistula

Series of images from an adolescent with residual tracheal diverticulum following repair of tracheoesophageal fistula (TEF) as an infant.
(A, B) Computed tomography (CT) showing trachea and small residual posterior tracheal diverticulum at the site of TEF repair (arrows).
(C) Three-dimensional CT with airway reconstruction showing the same tracheal diverticulum (arrow).