Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar and mediastinal contours are normal . There is a small hiatal hernia . No definite new focal consolidations , pleural effusions , or pneumothoraces are seen . The lungs are hyperinflated consistent with patient 's known emphysema . There is also bilateral pulmonary artery enlargement consistent with pulmonary hypertension , presumably a function of COPD , but stable since ___ .
    OUTPUT:
    
No definite acute interval changes to explain patient 's lingering cough . Since the patient 's lower breasts are dense and may obscure small findings in the bases of the lungs , if there is a high clinical suspicion for pneumonia , would recommend additional oblique views for further evaluation . These findings and recommendations were discussed with Dr . ___ by Dr . ___ at 12 : 30 pm by telephone on the day of the exam .