Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is extensive pneumomediastinum and subcutaneous emphysema within the right neck and right lateral chest . There is no definite pneumothorax on this supine view even though there was one demonstrated on the previous CT is . There is widening of the superior mediastinum likely reflective of mediastinal hematoma . Additionally , extrapleural opacity overlying of the left lung apex is compatible with extrapleural soft tissue hematoma . Opacity involving the right upper lobe could reflect contusion . There are multiple right - sided rib fractures and left first rib fracture , better demonstrated on the previous CT count . Angulation of the left midclavicle likely relates to prior injury .
    OUTPUT:
    
1 . Widening of the mediastinum is compatible with mediastinal hematoma as seen on the previous CT . Extrapleural opacity overlying the left lung apex is also compatible with hematoma . 2 . Pneumomediastinum and subcutaneous emphysema within the neck and right lateral chest . 3 . Opacity in the right upper lung could reflect contusion . 4 . No definite pneumothorax on this supine only view . 5 . Multiple right - sided rib fractures and left first rib fracture .