Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . Cardiac silhouette size is mildly enlarged with a left ventricular predominance . The aorta is tortuous and diffusely calcified . Pulmonary vasculature is not engorged . Mediastinal and hilar contours are similar . Patchy opacities are noted in the lung bases most likely reflective of atelectasis . No large pleural effusion or pneumothorax is detected however the right costophrenic angle is excluded from the field of view . No acute osseous abnormalities detected . A remote left mid clavicular fracture is re - demonstrated .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis .