Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation , effusion , or pneumothorax . Linear left basilar opacity may be due to atelectasis or scar . The cardiomediastinal silhouette is within normal limits . Compression deformity of L1 is unchanged from prior . There is no acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary process .