Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , accentuating interstitial markings . Retrocardiac opacity is likely atelectasis , consolidation can not be excluded . However , compared to prior exams , there is evidence of worsening moderate cardiomegaly and bilateral reticular opacities , concerning for increased pulmonary pressure . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Mild pulmonary edema . Retrocardiac atelectasis , less likely pneumonia .