Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . There are numerous old left - sided rib fractures / old rib deformities again seen . There is blunting of the left costophrenic angle suggesting a small left pleural effusion . The cardiac and mediastinal silhouettes are unremarkable . There is also old right clavicular fracture . A left retrocardiac opacity may relate to atelectasis , although underlying consolidation is not excluded .
    OUTPUT:
    
1 . Blunting of the left costophrenic angle suggests a small left pleural effusion . Underlying patchy left retrocardiac opacity may relate to atelectasis , although underlying consolidation is not excluded . 2 . Old left - sided rib fractures and right clavicle fracture .