Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , there is increased opacity projecting over the left hemi thorax . Left chest tube is now in place . There is no pneumothorax . Opacity projecting over the right lower lung is somewhat improved . Cardiomediastinal silhouette is difficult to assess given diffuse bilateral parenchymal opacities .
    OUTPUT:
    
Increased opacity projecting over the left lung could be due to loculated pleural effusion and underlying parenchymal opacity . Slight interval improvement in the appearance of the right lung with decreased pleural fluid but persistent parenchymal opacities .