Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Low lung volumes limits assessment . No focal consolidation , large effusion or pneumothorax is seen . There is mild interstitial pulmonary edema , less severe than on prior exam . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
Mild interstitial pulmonary edema .