It is associated with a decrease in the incidence of bronchopulmonary dysplasia. Each lobe is further divided up into segments called bronchopulmonary segments. Caffeine is used to treat bronchopulmonary dysplasia. These lymph nodes form four main groups including paratracheal, trachiobronchial, bronchopulmonary and pulmonary nodes. PAMR1 has been associated with bronchopulmonary dysplasia. Hypersensitivity may also be a reaction toward an established fungal infection in allergic bronchopulmonary aspergillosis. The humeral immune deficiency results in recurrent bronchopulmonary infections. They termed it "mycotic pseudotuberculosis", now known as allergic bronchopulmonary aspergillosis. Chronic lung disease, including bronchopulmonary dysplasia, is common in severe RDS. The lobes are further divided into bronchopulmonary segments and pulmonary lobules. Reduced lysozyme levels have been associated with bronchopulmonary dysplasia in newborns. Low levels have been found in primary ciliary dyskinesia, bronchopulmonary dysplasia, and pulmonary arterial hypertension. There are also bronchopulmonary lymph nodes on the hilum. This property allows a bronchopulmonary segment to be surgically removed without affecting other segments. It causes allergic bronchopulmonary disease and chronic lung lesions that resemble aspergillosis.