Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable upright chest radiograph was obtained . In comparison to recent chest x-rays , the lungs appear better ventilated on the present exam . Right middle and left upper lobe pneumonia and trace right pneumothorax were better assessed on yesterday 's chest CT . No new consolidation , effusion or large pneumothorax is present . A right pleural catheter is in stable position . A left PICC line tip terminates in the low SVC . Stable enteric catheter . Cardiac and mediastinal contours are normal . Known right rib fractures were better seen on CT . The endotracheal tube terminates at the midclavicular head .
    OUTPUT:
    
Bibasilar component of atelectasis is improving . Multifocal pneumonia is similar . Trace pneumothorax is not seen .