Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged , unchanged in size since ___ . Again seen are fibrotic changes across the left hilum , probably relating to prior radiotherapy , unchanged over multiple prior examinations , better appreciated on the CT examination from ___ . There is no pneumothorax , focal consolidation or pleural effusion .
    OUTPUT:
    
Unchanged mild cardiomegaly . Underlying pericardial effusion is better assessed with echo . No superimposed acute process .