Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right PICC has been repositioned from the prior exam and now appears to terminate in the mid to upper SVC ( previously in the low SVC ) . The lungs are hyperinflated . Increased interstitial markings in the bilateral lung bases are again noted which appear unchanged on the frontal view , but in the absence of a lateral view it is difficult to fully assess if there has been interval change in these opacities . A small retrocardiac opacity is noted , which may represent atelectasis but can not entiredly exclude pneumonia or aspiration in the right clinical setting . There is no evidence of pulmonary edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . A moderate hiatal hernia is seen .
    OUTPUT:
    
1 . Interval repositioning of the right PICC , which node appears to terminate in the mid to upper SVC ( previously in the low SVC ) . 2 . Small retrocardiac opacity , probably atelectasis but can not entirely exclude pneumonia or aspiration in the right clinical setting .