Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiograph from a few hours earlier , there is little overall change . Mildly enlarged cardiac silhouette is unchanged . Mediastinal veins are mildly dilated but there is no pulmonary edema or pleural effusion . Stable left lower lobe atelectasis . No pneumothorax . Right lung is clear . Left chest tube crosses to the midline and impinges on the mediastinum .
    OUTPUT:
    
1 . No evidence of hemothorax . 2 . Mild vascular engorgement without pulmonary edema .