Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral pneumothoraces , which are small to moderate in size . On the left , there are multiple rib fractures , some appearing displaced , with a large amount of gas in the adjacent soft tissues extending from the base of the left neck to the left upper abdomen . Heterogeneous opacification of the left lung base is concerning for pulmonary contusion . A moderate - sized layering left pleural effusion , which on the concurrent outside hospital CT demonstrates intermediate density , likely representing blood . Cardiomediastinal silhouette is normal . Modestly calcified aortic knob is noted . The right lung is clear .
    OUTPUT:
    
1 . Bilateral pneumothoraces , small to moderate . 2 . Multiple left - sided rib fractures , some appearing displaced . 3 . Significant gas in the soft tissues of the left thorax . 4 . Layering moderate sized left pleural effusion , representing hemothorax on the concurrent outside hospital CT .