Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP semi upright chest radiograph was obtained . The lung volumes are low without pleural effusion or pneumothorax . Perihilar linear opacities are consistent with prior radiation therapy . Linear left midlung opacity could reflect progression of this radiation - induced change or reflect subsegmental atelectasis without pneumothorax or free air projecting on the diaphragm , but this is not a fully upright view . No displaced rib fractures are identified . Dual lead pacemaker is noted . Right - sided Port - A - Cath as before . Cardiomediastinal contours are unchanged . Rounded nodular opacity in the lower right chest is more apparent than the prior and could reflect metastasis . Additional nodular opacity seen betweeen the anterior first and second ribs on the right .
    OUTPUT:
    
Linear left midlung atelectasis without acute process . Right lower lung nodule . Consider two view chest radiograph or assessment by CT , worrisome for metastasis in setting of prior malignancy .