Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube is 4 .5 cm from the carina . There is a Dobbhoff tube positioned within the stomach . Since prior radiograph , there is increase in retrocardiac and left lower lung opacification , likely atelectasis and pleural effusion ; however , a focal consolidation can not be excluded . Lung volumes are low . There is no other definite focal consolidation , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is enlarged but unchanged .
    OUTPUT:
    
Worsening left retrocardiac opacification , likely atelectasis and pleural effusion , but infectious process can not be excluded .