Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . Given this , no definite focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac silhouette is top - normal to mildly enlarged in size . Mediastinal contours unremarkable . No pulmonary edema is seen .
    OUTPUT:
    
Top normal to mildly enlarged cardiac silhouette without pulmonary edema .