%0 Journal Article %A I Hyde %A R E English %A J D Williams %T The changing pattern of chronic lung disease of prematurity. %D 1989 %R 10.1136/adc.64.4_Spec_No.448 %J Archives of Disease in Childhood %P 448-451 %V 64 %N 4 Spec No %X Thirty four infants with chronic lung disease of prematurity were reviewed and divided into two groups on the appearance of the chest radiograph. Type 1 disease (n = 19) was defined as homogeneous or patchy ill defined opacification in the lungs without coarse reticulation, and type 2 disease (n = 11) had the classical appearance of bronchopulmonary dysplasia. Four patients could not be classified. We conclude that type 1 disease represents typical chronic lung disease of premature infants, and type 2 is usually complicated by pulmonary interstitial emphysema. As no infant with type 1 disease died, its histopathological basis is unknown. %U https://adc.bmj.com/content/archdischild/64/4_Spec_No/448.full.pdf