Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours remain within normal limits , and the heart size is normal . Pulmonary vasculature is normal . Patchy opacities within the left upper lobe and lingula likely reflect radiation changes as seen on the previous CT . No new focal consolidation is demonstrated . There is no pleural effusion or pneumothorax . No acute osseous abnormality is visualized . Irregularity of the left third and fifth ribs is re - demonstrated .
    OUTPUT:
    
Radiation fibrosis within the left upper lobe and lingula . No new focal consolidation to suggest pneumonia .