Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs performed on same day on ___ at 08 : 4 , there is an increase in prominence of central pulmonary vessels , likely reflecting elevated pulmonary venous pressure . Lung volumes are decreased . Cardiomediastinal silhouette is unchanged . An ET tube and NG tube are appropriately positioned .
    OUTPUT:
    
Increase in prominence of central pulmonary vessels , likely reflecting elevated pulmonary venous pressure . Low lung volumes .