Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Comparison is made to ___ . An ET tube is identified with its tip 6 .4 cm from the bifurcation . A right PICC is seen with its tip in the distal SVC . There are hazy opacities in the lower lobes bilaterally with obscuration of the hemidiaphragm on the left . The right costophrenic angle is visualized . The pulmonary vasculature appears normal .
    OUTPUT:
    
Small left pleural effusion and atelectasis at the lung bases bilaterally , unchanged from prior study .