Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate clear lungs , without pleural effusion or pneumothorax . The cardiac silhouette remains mildly enlarged . The thoracic aorta is mildly tortuous , also unchanged . Lateral left rib deformities of T4 through T6 ribs are unchanged from ___ .
    OUTPUT:
    
No acute chest abnormality . If there is concern for acute rib fracture , recommend repeat dedicated views with a marker to mark the site of pain .