Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . There is no pneumothorax or pleural effusion . The cardiac and mediastinal silhouettes are unremarkable . There are no rib fractures seen . There are multilevel degenerative changes of the spine , similar to prior .
    OUTPUT:
    
No acute cardiopulmonary process . No displaced rib fracture seen ; if high clinical concern for rib fracture , CT is more sensitive . .