Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are relatively well expanded and grossly clear , with the exception of linear atelectasis the lower lungs bilaterally . There is no pleural effusion , pneumothorax , pulmonary edema , or focal opacification . The heart is top - normal in size , allowing for AP technique . No acute osseous abnormalities are detected . Multilevel degenerative changes are noted throughout the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary pathology .