Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate a right - sided port with the catheter unchanged in the low SVC . Compared to the prior radiograph , there are decreased lung volumes with bibasilar subsegmental atelectasis . The cardiac shadow is larger than the prior radiograph , possibly indicating pericarditis as a cause of the patient 's pleuritic chest pain . If there is a pericardial effusion , is not hemodynamically significant .
    OUTPUT:
    
1 . Bilateral subsegmental atelectasis . 2 . Enlarged cardiac shadow possibly indicating non hemodynamically significant pericardial effusion .