The main tracheal tubes show a conspicuous spindle-shaped enlargement in metathorax, mesothorax and first abdominal segment.
This study failed to show any benefit from reversible tracheal occlusion and this was thought to be secondary to persistence of a thickened alveolar wall.
Notably there were no cases of tracheal stenosis or recurrent laryngeal nerve damage in the survivors.
The experience with primary tracheal resection utilizing extracorporeal circulation is reported.
Different techniques to permit tracheal occlusion have been utilised, with mixed outcomes and a range of mortality and morbidity.
Subglottic obstruction resulting in severe laryngeal and tracheal stenosis was a complication of intubation in one patient.
The tracheal system is in essentials similar to that of the 1st instar larva.
The tracheal system of the parasitoid larva develops probably in yet earlier instars, though they appear apneustic.
