Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . The hila are enlarged , suggestive of enlarged central pulmonary arteries . No focal consolidation or mass is seen . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is mildly enlarged , similar prior exam . Vascular stent is seen in the proximal left upper extremity .
    OUTPUT:
    
Enlarged hila , suggestive of enlarged central pulmonary arteries and cardiomegaly . No acute cardiopulmonary process .