Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs appear hyperexpanded with flattening of the hemidiaphragm suggestive of COPD . The lungs are however clear . Cardiac and mediastinal silhouette appears within normal limits . There is no evidence of pulmonary edema . Mild atherosclerotic calcifications are noted at the aortic arch . No acute fractures identified .
    OUTPUT:
    
No evidence of pulmonary edema . Findings suggestive of COPD .