Introduction: Bullous lung disease is a common presentation in patients with chronic obstructive pulmonary disease (COPD). The giant pulmonary bulla occupies one third of involved hemithorax and characterized by the existence of centrilobular emphysema in non bullous lung. Sometimes air reabsorbs spontaneously leading to shrinkage and regression of bulla known as autobullectomy. https://www.jmannino.com/best-grab-Kelway-SST-Salinity-Tester-top-mega/