Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are relatively lower than the prior study . No definite focal consolidation is seen . There is no pleural effusion . The small right - sided pneumothorax seen on preceding chest CT , earlier today , is not appreciated on this radiograph . The cardiac and mediastinal silhouettes are unremarkable . Multiple right - sided rib fractures were better assessed on preceding CT .
    OUTPUT:
    
Pneumothorax seen on preceding CT not well seen on radiograph . Known multiple right rib fractures better assessed on CT .