Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in the retrocardiac and left upper lobe opacity . There is also increasing moderate left pleural effusion . The right lung remains clear . Mild cardiomegaly . No pneumothorax . Moderate hiatal hernia . Prior spinal surgery with hardware along the lower thoracic spine .
    OUTPUT:
    
Interval increase in the left multi focal opacities . Increasing moderate left pleural effusion .