Congenital lobar emphysema is a chronic disease involving progressive hyperinflation of one or more pulmonary lobes, resulting in the trapping of air in the affected lobes. There are two distinct types of congenital lobar emphysema: (a) an overexpansion of the normal lung lobe and (b) a polyalveolar lobe, in which there are an increased number of normally expanded alveoli. Although half of all cases have an etiology that is idiopathic, this disease can also be caused by lung obstructions or failure of the lungs to develop properly.
Congenital lobar emphysema is a chronic disease involving progressive hyperinflation of one or more pulmonary lobes, resulting in the trapping of air in the affected lobe(s). There are two distinct types of congenital lobar emphysema: (a) an overexpansion of the normal lung lobe and (b) a polyalveolar lobe, in which there exist an increased number of normally expanded alveoli. Although half of all cases have an etiology that is idiopathic, this disease can also be caused by lung obstructions or failure of the lungs to develop properly.
A rare cystic lesion of a lobe of the lung that may cause infantile respiratory distress. The affected lobe is distended and appears excessively lucent on plain radiographs of the chest.