Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes . Left mid lung linear atelectasis / scarring is seen . There is no focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is mildly enlarged . The aorta is calcified and tortuous . While there may be minimal central pulmonary vascular engorgement . There is no overt pulmonary edema . No displaced fracture is seen .
    OUTPUT:
    
Mild enlargement of the cardiac silhouette with possible minimal central pulmonary vascular engorgement , without overt pulmonary edema .