Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged . The aorta is tortuous . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is not engorged . Streaky and patchy opacities in the lung bases likely reflect areas of atelectasis , No pleural effusion or pneumothorax is present . No acutely displaced rib fractures are identified .
    OUTPUT:
    
Streaky and patchy opacities in lung bases likely reflect areas of atelectasis .