Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to prior studies , the cardiomediastinal silhouette is stable , within normal limits . The bilateral hila are normal . There is mild pulmonary vascular congestion , improved since prior studies . Streaky perihilar opacities and diffuse interstitial prominence is somewhat improved since the prior radiographs , consistent with residual pneumonia . There may be a component of superimposed mild pulmonary edema . There are trace bilateral pleural effusions . There is no pneumothorax . There is mild lower thoracic levoscoliosis .
    OUTPUT:
    
1 . Persistent though improved streaky perihilar opacities likely reflect residual pneumonia . Possible mild superimposed pulmonary edema . 2 . Trace bilateral pleural effusions .