Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is mildly enlarged with a left ventricular predominance . Mediastinal contours are unremarkable with calcifications seen at the aortic knob . Pulmonary vasculature is not engorged . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is identified . Remote left - sided rib fractures are again seen . Previously noted right PICC has been removed .
    OUTPUT:
    
No acute cardiopulmonary abnormality .