Endoscopic images of neonatal tracheal abnormalities.
(A) Tracheomalacia with anterior tracheal wall bowing.
(B) Incomplete vascular sling with posterior tracheal wall compression.
(C) Type C tracheoesophageal fistula with fistula located proximal to the carina on the posterior tracheal wall.
(D) Tracheal stenosis.
(E) Tracheal agenesis.