Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . No focal consolidations concerning for pneumonia are identified . There is a diffuse widespread interstitial abnormality overall unchanged compared to the prior exam , likely secondary to mild pulmonary edema . There may be mild pulmonary vascular congestion . There is no pneumothorax or pleural effusion . The visualized osseous structures are unremarkable .
    OUTPUT:
    
No focal consolidations concerning for pneumonia identified . Diffuse interstitial abnormalities are overall unchanged compared to the prior exam .