Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated . There is stable scarring in the left lower lung field , but there are no focal opacities in the remaining left lung , The right lung is clear . There is stable mild cardiomegaly and the cardiomediastinal and hilar contours are unremarkable otherwise . There is a tiny pleural effusion in the right , unchanged from prior exam . No pneumothorax . Right posterior rib deformities and chronic posttraumatic changes in the right coracoclavicular region are also stable .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Unchanged from ___ .