Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , there has been interval worsening of pulmonary edema , predominantly in the left lung . No significant pleural effusion or pneumothorax . Heart size and mediastinal contours are normal . Rounded opacities in the right mid lung may be related to prior rib fractures .
    OUTPUT:
    
Interval worsening in pulmonary edema predominantly in the left lung , with no large pleural effusion or pneumothorax . Rounded opacities in the right mid lung are of unknown etiology , possibly from rib fracture . CT can further evaluate this region is indicated .