Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large bore dialysis catheter terminates in the expected location of the mid SVC . Linear opacities in the retrocardiac region better seen on the lateral projection likely reflect subsegmental atelectasis . The remainder of the lungs are clear . There is no vascular congestion , pulmonary edema , or pleural effusions . Cardiomediastinal and hilar contours are within normal limits . There is no pneumothorax .
    OUTPUT:
    
1 . Minimal retrocardiac subsegmental atelectasis 2 . Dialysis catheter in the mid SVC . No pulmonary edema or pleural effusions .