Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is lordotic . Cardiac , mediastinal and hilar contours are unchanged with the heart size within normal limits . Prominence of the main pulmonary artery again raises concern for underlying pulmonary arterial hypertension . Pulmonary vasculature is not engorged . Lungs are hyperinflated with flattening of the diaphragms and attenuation of the upper lobe vascular markings compatible with emphysema . No focal consolidation . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Emphysema . Enlargement of the main pulmonary artery suggestive of underlying pulmonary arterial hypertension , unchanged .