Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Overall , there appears to be significant progression of patient 's known widespread intrathoracic metastases compared to the prior chest radiograph from ___ . Right - sided Port - A - Cath terminates in the low SVC . There is no pneumothorax . The heart size is normal . Extensive hilar lymphadenopathy is consistent with patient 's known intrathoracic metastases . The visualized osseous structures are unremarkable .
    OUTPUT:
    
1 . Interval progression of patient 's known widespread intrathoracic metastases compared to the prior chest radiograph from ___ and likely progressed from the prior chest CT from ___ . An underlying infectious process can not be excluded by this study . 2 . Left lower lobe atelectasis .