Learning Objectives:
Consider tracheobronchomalacia as a possible co-morbid condition in difficult-to-treat asthma

Gain greater knowledge of when to consider obtaining a multi-detector chest CT in patients with difficult-to-treat asthma or asthma-like symptoms

Learn that the current criteria for the diagnosis of tracheobronchomalacia will need to be increased closer to 70% collapse of the trachea