Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph is obtained with patient in the upright position . Right IJ central venous catheter is no longer visualized . Tip of the left PICC now terminates 4 cm below the carina in the lower SVC . Lungs are better expanded , and there is improvement in diffuse pulmonary opacifications . Cardiomediastinal silhouette is stable . No significant pleural effusions and no pneumothorax .
    OUTPUT:
    
Tip of left PICC , now terminates in the lower SVC .