Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal AP and lateral views of the chest were obtained . There is no focal consolidation , pleural effusion or pneumothorax . There is mild bibasilar atelectasis . Heart size is normal . Mediastinal silhouette and hilar contours are within normal limits . A healing right seventh posterior rib fracture is seen with callus formation . Degenerative change is seen in the shoulder girdles bilaterally .
    OUTPUT:
    
No pneumonia , effusion , or edema .