Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Biapical scarring unchanged . New callus formation around rib fractures in the left anterior first and second ribs and posterior left eighth rib and right lateral ninth rib . Mild pectus excavatum .
    OUTPUT:
    
Callus formation of recent rib fractures to the left first , second , and eight ribs and the right ninth rib .