Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . This accentuates the size of the cardiac silhouette which is likely top normal . The mediastinal contour also is slightly widened due to the low lung volumes , but otherwise appears unremarkable . There is crowding of the bronchovascular structures but no overt evidence of pulmonary edema . Evaluation of lung bases is slightly limited due to the low lung volumes , with presence of minimal streaky opacities suggestive of atelectasis . No focal consolidation , pleural effusion or pneumothorax is otherwise noted . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes which limits assessment of lung bases . Probable bibasilar atelectasis .