Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume and showed diffuse bilateral interstitial and focal airspace opacities . The cardiac silhouette remains massively enlarged . The mediastinal silhouette and hilar contours are normal . No definite pleural effusions are present . A left - sided pacer with its leads terminating in the right atrium , right ventricle and coronary sinus is unchanged compared to the previous examination .
    OUTPUT:
    
Moderate pulmonary edema . Massively enlarged cardiac silhouette .