How did you originally find out it was a aortic arch? Does it show up on the barium xray. Could alot of what we think is mega is acutually a aortic arch? Patty Szymczak Patty, Your vet can usually tell if it is a PRAA or Mega with the help of the barium x-ray. They can see where the vascular band is restricting the esophagus on the x-ray. If those pups are caught quick enough, before there is a lot of damage to the esophagus, they have a good outlook. However, if there is damage to the esophagus, then they will probably have some regurgitation of their food for their lifetime. Janet ============================================================================ POST is Copyrighted 2006. All material remains the property of the original author and of GSD Communication, Inc. NO REPRODUCTIONS or FORWARDS of any kind are permitted without prior permission of the original author AND of the Showgsd-l Management. ALL RIGHTS RESERVED. ALL PERSONS ARE ON NOTICE THAT THE FORWARDING, REPRODUCTION OR USE IN ANY MANNER OF ANY MATERIAL WHICH APPEARS ON SHOWGSD-L WITHOUT THE EXPRESS PERMISSION OF ALL PARTIES TO THE POST AND THE LIST MANAGEMENT IS EXPRESSLY FORBIDDEN, AND IS A VIOLATION OF LAW. VIOLATORS OF THIS PROHIBITION WILL BE PROSECUTED. For assistance, please contact the List Management at admin@xxxxxxxxxxxx VISIT OUR WEBSITE - URL temporarily deleted due to AOL issues ============================================================================