Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC tip is difficult to see on multiple views due to the overlying pacemaker leads , which terminate in standard positions . It most likely lies in the mid-SVC . Left basilar atelectasis is noted . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Right PICC most likely lying in the mid SVC .