Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacity in the left lung base most likely represents atelectasis . No focal opacity , pulmonary edema , pleural effusion or pneumothorax identified . The heart size is normal . The aorta is unfolded . No rib fractures identified . Hypertrophic changes noted in the spine .
    OUTPUT:
    
1 . Clear lungs . 2 . No rib fractures identified . If there are focal areas of pain , dedicated views of those areas are recommended .