Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged fibrous scarring extending from the right hilum to the right apex similar to that seen on previous CT . Patient has known emphysema better seen on CT . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Compression fracture of the lower thoracic spine better demonstrated on previous CT .
    OUTPUT:
    
No acute cardiopulmonary process or evidence of pulmonary edema . Patient has known emphysema and lungs are hyperinflated . Unchanged scarring extending from the right hila to the right apex . Thoracic compression fracture also seen on previous CT