Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Five views of the chest demonstrate clear lungs with no pleural effusion , focal consolidation or pneumothorax . The cardiac silhouette and mediastinal contours are normal . A BB marker is placed over the left twelfth rib . No fracture is evident .
    OUTPUT:
    
1 . No acute chest abnormality . 2 . No displaced rib fracture in the region of the BB marker .