Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Oblong sclerotic focus is again seen projecting over the anterior right second rib , stable since earlier this month . The lungs remain hyperexpanded but clear . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Hilar contours are stable .
    OUTPUT:
    
Oblong sclerotic focus is again seen projecting over the anterior right second rib , stable since earlier this month . The lungs remain hyperexpanded but clear . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Hilar contours are stable .