Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Kerley B lines are noted compatible with mild fluid overload or congestive heart failure . No large pleural effusions are seen . No definite sign of pneumonia . Cardiomediastinal silhouette is stable . No pneumothorax . Bony structures are intact .
    OUTPUT:
    
Kerley B lines indicative of interstitial edema which could reflect fluid overload or congestive heart failure .