Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a left PICC tip , which terminates in the low SVC . The NG tube is seen terminating in the left upper quadrant . There is a pigtail overlying the mid abdomen . There are linear opacities at the bases bilaterally , representing unchanged atelectasis . The lungs are otherwise clear . Heart size is stable . . The mediastinal and hilar contours are stable . . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Left PICC , and NG tube in appropriate positioning . 2 . Unchanged bibasilar atelectasis .