Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The lungs are clear of consolidation or effusion . The cardiomediastinal silhouette is within normal limits . There are three compression deformities in the thoracic spine , which are grossly unchanged since the prior chest x-ray from ___ .
    OUTPUT:
    
No definite acute cardiopulmonary process .