Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low normal . There is no focal consolidation , effusion , or pneumothorax . There is mild unfolding of the thoracic aorta and mild calcification at the aortic knob . Otherwise , mediastinal and hilar contours are normal . There is mild central vascular congestion without overt pulmonary edema . Moderate cardiomegaly , of indeterminate chronicity . Old left rib fractures are noted .
    OUTPUT:
    
1 . Mild central vascular congestion without overt pulmonary edema . 2 . Moderate cardiomegaly , of indeterminate chronicity .