Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged . Mediastinal and hilar contours are unchanged , with mild tortuosity of the thoracic aorta noted . Prominence of the hila bilaterally is similar . The pulmonary vascularity is not engorged . Linear opacity in the region of the lingula likely reflects scarring in is unchanged . Remainder of lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are detected .
    OUTPUT:
    
Linear scarring in the lingula . No acute cardiopulmonary abnormality .