Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left thoracostomy tube is unchanged in position . No pneumothorax is detected . Again seen are mildly displaced left rib fractures , better visualized on the radiographs from ___ . The lung volumes are low . The heart size is top normal . The hilar and mediastinal contours are unchanged . There is central pulmonary vascular engorgement without overt edema . A small left pleural effusion is unchanged .
    OUTPUT:
    
1 . No pneumothorax . 2 . Small left pleural effusion .