A tree grows in bronchus.

A tracheobronchial foreign body (TFB) can be a life-threatening emergency that requires urgent intervention. TFBs occur most commonly in childhood as a result of aspiration. Traumatic TFB is not frequently reported in the literature.

Safety of topical tetracaine in patients undergoing flexible bronchoscopy.

Lidocaine is currently the most commonly used topical anesthetic during flexible bronchoscopy (FFB) in North America. Tetracaine, a longer-acting agent, might produce better airway analgesia; however, previous literature has suggested that tetracaine is more risky and can even result in cardiac arrest. The maximum recommended tetracaine dose for topical anesthesia is 20 mg.