Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph demonstrates interval placement of a left PICC , which likely terminates at the cavoatrial junction . There is improved aeration of the bilateral lungs , with unchanged bilateral parenchymal opacities consistent with known metastatic disease . Bilateral small to moderate pleural effusions are unchanged . There is no pneumothorax .
    OUTPUT:
    
Interval placement of a left PICC , which terminates at the cavoatrial junction .