Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . There are increased interstitial markings similar to previous exam . There is also left basilar opacity which partially silhouettes the hemidiaphragm and descending thoracic aorta . Elsewhere the lungs are clear of confluent consolidation . Cardiac silhouette is enlarged but stable . There is no large effusion . Compression deformities in the lower thoracic and upper lumbar spine are as on previous exam . Acute slighlyt displaced left posterior ___ through 6th rib fractures are seen .
    OUTPUT:
    
Acute left ___ through 6th rib fractures . No pneumothorax . Mild interstitial edema andleft basilar opacity which could represent any combination of atelectasis or consolidation .