Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC is seen with tip in the upper SVC . Lung volumes are relatively low . There is bibasilar atelectasis and likely superimposed mild pulmonary edema . Small bilateral pleural effusions are also suspected . Cardiomediastinal silhouette is stable . No acute osseous abnormalities . Right - sided pigtail catheter is no longer visualized .
    OUTPUT:
    
Mild pulmonary edema which appears improved since ___ .