Fig. 3

Tracheal atresia Case 6: Dorsal view of the respiratory tract with oesophagus (O) and aorta (A) laid aside, showing atresia with a streak-like remnant (arrow) of the upper trachea (T), dilated main bronchi (B) and hyperplasia of the lungs (a). Case 7: Ventral view of the respiratory tract with the oesophagus (O) laid aside displaying atresia with a streak-like remnant of the lower trachea (arrow), dilatation of the bronchi and hyperplastic lungs shown on the sagittal cut surface (b). Case 8: Dorsal view of the respiratory tract with the oesophagus (O) laid aside, atresia of the lower trachea (arrow), dilatation of the bronchi and hyperplasia of the lungs (c)