Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Relative opacity of the left base on the frontal view , not substantiated on the lateral view , is most consistent with overlying soft tissue . The cardiac silhouette is mildly to moderately enlarged . No overt pulmonary edema is seen . The mediastinal and hilar contours are stable .
    OUTPUT:
    
No findings to suggest acute pneumonia . Mild - to - moderate enlargement of the cardiac silhouette .