Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of consolidation , effusion , or pneumothorax . There is flattening of bilateral hemidiaphragms , which raises suspicion for possible chronic obstructive pulmonary disease . The cardiomediastinal silhouette is normal . Atherosclerotic calcifications are noted at the aortic arch . The patient is status post left mastectomy . Post - surgical changes are also noted with clips in the right axilla .
    OUTPUT:
    
No acute cardiopulmonary process .