Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is within normal limits . Left mid lung patchy opacities reflect known radiation fibrosis involving the left lower lobe . Right hemithorax volume loss is unchanged . Right lower lung opacification most conspicuous on lateral view likely reflects known right lower lung lesion better evaluated on prior FDG PET - CT . There is no definite superimposed focal lung consolidation . There is no pulmonary edema . There is no sizable pleural effusion or pneumothorax .
    OUTPUT:
    
No definite evidence of pneumonia .