Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there is increased density and extension of opacities along the right mid lung zone and right lower lobe . There has been interval increase in density of left lower lobe opacities . There may be a small right pleural effusion . There is no pneumothorax . Cardiomediastinal and hilar contours are within normal limits .
    OUTPUT:
    
Interval increase in density and extension of right lung and left lower lung opacities , concerning for progressive and worsening multilobar pneumonia .