Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no effusion or pneumothorax . Opacity at the posterior costophrenic angles better characterized by same - day CT thoracic spine as atelectasis . The cardiomediastinal silhouette is within normal limits . Compression deformity of a mid thoracic vertebral body is noted . No definite acute osseous abnormalities identified .
    OUTPUT:
    
No definite acute cardiopulmonary process .