Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lung volumes are low with streaky and linear opacities in the lung bases most likely reflective of atelectasis . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is detected .
    OUTPUT:
    
Low lung volumes with streaky and linear opacities in the lung bases most likely reflective of atelectasis . Please note that infection is not completely excluded in the correct clinical setting .