Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Aorta is unfolded and demonstrates atherosclerotic calcifications at the knob . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is not engorged . Lungs are hyperinflated without focal consolidation . No large pleural effusion or pneumothorax is visualized though the left costophrenic angle is not completely included in the field of view . Cluster of calcifications are seen overlying the left lung base . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Cluster of calcifications projecting over the left lung base of unclear etiology but unlikely to be of acute clinical significance .