Surveillance Versus Bronchoscopy After Airway Stenting

Inclusion Criteria: * All adult patients that undergo central airway (trachea, main stem bronchi and bronchus intermedius) stenting. Exclusion Criteria: * Inability to obtain informed consent due to cognitive, neurologic or psychiatric impairment. * Lobar or segmental stents alone * Terminally ill patients considered too sick to undergo a follow-up surveillance bronchoscopy * Stent insertion as a trial for excessive central airway collapse (as the duration of these stents is only 1-2 weeks) * Patients with a tracheostomy (as these patients can undergo frequent in-line suctioning that can affect the outcomes being assessed)