Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . No prior . There are bibasilar opacities , somewhat more confluent on the left than on the right with silhouetting of the hemidiaphragm , particularly in the retrocardiac region . Superiorly , the lungs are clear . Cardiac silhouette is difficult to assess given silhouetting . Lower thoracic dextroscoliosis is noted . Upper thoracic laminectomies are suspected .
    OUTPUT:
    
Bibasilar opacities compatible with infection in the proper clinical setting . There may be superimposed component of effusion on the left . Probable upper thoracic laminectomy changes .