Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Cardiomediastinal silhouette and hilar contours are normal . Millimetric density at the left lung base has no lateral correlate and likely represents a calcified granuloma . Lungs volumes are low but otherwise clear . Pleural surfaces are clear without effusion or pneumothorax . Surgical clips project over the left upper quadrant .
    OUTPUT:
    
No acute cardiopulmonary abnormality .