Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in upright position . The heart size is within normal limits . No configurational abnormality is identified . Unremarkable appearance of thoracic aorta . The pulmonary vasculature is not congested . No signs of acute parenchymal infiltrates are present and the lateral pleural sinuses are free . No evidence of pneumothorax in the apical area . Skeletal structures of the thorax grossly unremarkable . Multiple contorted wires and lines are overlying the right hemithorax and shoulder area . They must be external . Our records include a previous chest examination dated ___ . This examination demonstrated a small left - sided pleural effusion and basal pulmonary changes suggestive of atelectasis . On the present examination , no residuals are seen .
    OUTPUT:
    
Normal chest findings as can be identified on portable AP single view examination .