Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which appears mildly enlarged . The aorta is unfolded . Widening of the right paratracheal stripe is unchanged , and could suggest underlying lymphadenopathy or mediastinal fat . The hilar contours are unchanged . The pulmonary vasculature is normal . There is minimal atelectasis at the lung bases without focal consolidation . No pleural effusion or pneumothorax is clearly identified . Mild elevation of the right hemidiaphragm is again noted . Multilevel moderate degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis . Widened right paratracheal stripe , unchanged , potentially due to underlying lymphadenopathy or mediastinal fat .