Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are contiguous displaced left rib fractures involving at least the second through the fifth ribs . No pneumothorax is identified . There is also obscuration of the left hemidiaphragm . The right lung is grossly clear . A left pleural effusion is present . The cardiomediastinal silhouette and hilar contours are within normal limits .
    OUTPUT:
    
1 . Contiguous displaced left rib fractures involving at least the posterior aspect of the second through fifth ribs . No pneumothorax identified on radiograph . 2 . Small left pleural effusion . Hemothorax not excluded . 3 . Obscuration of the left hemidiaphragm which may be related to a combination of atelectasis and pleural effusion .