Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Retrocardiac opacity containing air bronchograms is concerning for pneumonia . Mild atelectasis at the right lung base noted . There are small bilateral pleural effusions . Moderate cardiomegaly appears unchanged . No pneumothorax is identified . No free air below the right hemidiaphragm .
    OUTPUT:
    
1 . Left lower lobe pneumonia . 2 . Moderate cardiomegaly . Small bilateral pleural effusions .