Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views chest were performed . The lung volumes are low , resulting in vascular crowding . There is no pleural effusion , pneumothorax or focal airspace consolidation . Bibasilar atelectasis is appreciated . The cardiac silhouette remains top normal in size . The aorta is enlarged . The hilar contours are normal . There are no acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary process with an enlarged aorta .