Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is slightly limited by patient rotation . Lung volumes are slightly low . Heart size is normal . Mediastinal and hilar contours are grossly unremarkable . Patchy opacities in the lung bases may reflect areas of atelectasis in the setting of low lung volumes . No pulmonary edema , pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
Low lung volumes with mild patchy opacities in the lung bases , potentially atelectasis . Infection or aspiration can not be excluded in the correct clinical setting .