label: tracheal agenesis
label_lc: tracheal agenesis
description: "Tracheal agenesis (TA) is a rare congenital malformation in which the trachea may be completely absent (agenesis), or partially in place but underdeveloped (atresia). In both cases, proximal-distal communication between the larynx and the alveoli of the lungs is lacking."