Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is scarring in the right lower lobe . There is cardiomegaly and evidence of mitral valve replacement . Otherwise , the hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Right lower lobe scarring . No focal airspace consolidation .