Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The pulmonary arteries are enlarged , suggesting pulmonary hypertension . There is no pulmonary edema . The aorta is tortuous and the heart is enlarged , however this is stable compared to the prior radiograph . There is no pleural effusion or pneumothorax . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Enlarged pulmonary arteries , suggesting pulmonary hypertension .