Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there has been substantial decrease in right pleural effusion with minimal pleural effusion . Right lower lobe atelectasis is improved . No appreciable pneumothorax is seen . There is persistent moderate left pleural effusion , possibly larger . There is engorgement of the pulmonary vasculature , though no pulmonary edema is seen . The heart size is enlarged . Fiducial markers are seen in the abdomen . Severe degenerative changes of the spine is seen .
    OUTPUT:
    
1 . Minimal residual right pleural effusion . No appreciable pneumothorax . 2 . Moderate left pleural effusion , possibly larger .