Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate pulmonary vascular enlargement , right greater than left , corresponding to enlargement of the right pulmonary artery . The heart is mildly enlarged . There is scarring at the bilateral apices . There is no pneumothorax , consolidation , or pleural effusion . There are multiple well - healed old right sided rib fractures .
    OUTPUT:
    
Enlarged pulmonary arteries , right greater than left .