Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC terminates in the upper SVC . Heart size and cardiomediastinal contours are normal . Patchy nonspecific opacities are present in the right upper and bilateral lower lobes . Right upper lung opacity appears improved since prior exams , likely residua of prior infection . Bilateral lower lobe opacities are nonspecific and may represent either atelectasis or aspiration . No pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Stable position of left PICC terminating in the upper SVC . 2 . Bilateral lower lobe patchy opacities , either atelectasis or aspiration . 3 . Improved right upper lobe opacity .