Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is enlarged as on prior with a prosthetic valve . There is mild prominence of interstitial markings which may be due to interstitial edema . There is no effusion or pneumothorax . No acute osseous abnormalities identified .
    OUTPUT:
    
Cardiomegaly with mild interstitial edema