Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vascularity is normal . Focal area of linear opacities within the right mid lung field may represent an area of scarring or subsegmental atelectasis . Lungs are otherwise clear . No focal consolidation , pleural effusion or pneumothorax is identified . The osseous structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary abnormality .