Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is within normal limits . Aortic calcifications and prominence of the central pulmonary arteries are again noted . The lungs remain hyperinflated with flattening of the diaphragm , prior chest CT confirms emphysema . Linear scarring is again seen in the right middle and left lower lobes . There is no evidence for pulmonary consolidation , pulmonary edema , or pleural effusion . There is no pneumothorax . Degenerative changes , mild dextroconvex scoliosis , and ossification of the anterior longitudinal ligament are again seen in the thoracic spine . Minimal anterior wedging of several mid thoracic vertebral bodies is unchanged .
    OUTPUT:
    
Stable appearance of the chest with COPD , but no evidence for acute abnormalities .