Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuates the size of the cardiac silhouette which appears borderline enlarged . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . Apart from mild atelectasis in the lung bases , the lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary abnormality .