Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Linear opacity in the right mid lung field is compatible with subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . There are mild multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .