Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hyperexpanded lungs with flattened diaphragms consistent with emphysema . Small right pleural effusion . Chronic vascular calcifications within the left subclavian artery are stable , unchanged from ___ . The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . No pneumonia , no pulmonary edema . Mild degenerative disc disease of the thoracic spine .
    OUTPUT:
    
Small right pleural effusion . Hyper-expanded lungs with flattened diaphragms consistent withe emphysema . Chronic vascular calcifications in the left subclavian artery . Mild degenerative disc disease of the thoracic spine . No evidence of pleural effusion .