Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There are bibasilar opacities , slightly asymmetric and more conspicuous on the right than on the left . This may be due to chronic underlying lung disease as seen on prior chest CT and has not significantly changed . Superiorly the comment the lungs are clear . Cardiomediastinal silhouette is unchanged and within normal limits . Median sternotomy wires again seen . No acute osseous abnormality detected .
    OUTPUT:
    
No acute cardiopulmonary process .