Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is are low in volume , with mild bibasilar atelectasis , but the lungs are without focal consolidation . There is no pleural effusion . New moderate enlargement of the cardiac silhouette due to cardiomegaly ( physiologic in late pregnancy ) , and / or pericardial effusion is exaggerated by low lung volumes . There is no engorgement of either lung or mediastinal vessels to suggest pressure eleveation in either circulation .
    OUTPUT:
    
New mild cardiomegaly , could be physiologic in late pregnancy and / or pericardial effusion .