Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal to mildly enlarged . Mediastinal contours are unremarkable . Hilar contours are unremarkable . No pulmonary edema is seen .
    OUTPUT:
    
Low lung volumes and top - normal to mildly enlarged cardiac silhouette . No focal consolidation or pulmonary edema .