Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size and cardiomediastinal contours are normal . Lung volumes are low . Diffusely increased interstitial markings are consistent with interval worsening of pulmonary edema , worse on the right . An infectious process can not be excluded . Presumed pleural effusions are not large . No pneumothorax .
    OUTPUT:
    
No pneumothorax . Asymmetric pulmonary edema has worsened since the study 3 hr prior . An infectious process can not be excluded .