@stovo Hello, BRONCHIAL obstruction is a condition that presents a group of clinical, physical, and roentgenology findings which appear in a definite sequence, the nature of the finding at any given time being dependent upon the period in the development of the obstruction at the time the condition is being studied. Airway obstruction is often depicted as someone choking on a piece of food. But that’s only one of many things that can cause airway obstruction. Other causes include inhaling or swallowing a foreign object, small objects lodged in the nose or mouth, viral infections, bacterial infections, and respiratory illness that causes upper airway inflammation.