Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . The cardiomediastinal silhouette and hilar contours are normal . There is no pleural effusion or pneumothorax . There are bilateral rounded opacities projecting over the lower thorax , likely external to the lung parenchyma .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .