Hi @jayson so happy you found us, welcome to Mayo Clinic Connect! First, deep breath. I know it seems overwhelming but all that your doctors are doing is actually necessary, right now with the information we have available MALS is an acquire diagnosis yet other diagnosis (differential diagnosis) must be ruled out before you can start treatment options for MALS. It is a frustrating but necessary step. Often times all GI work up will be normal in MALS patients. Most vascular surgeons want you to have a comprehensive GI work up and vascular work up before they start with treatment options. I am using the word MALS with you ... have they said that to you... celiac compression can also be caused by vascular disorders... either way you are at the right place. You have a good vascular surgeon it sounds like, he is right that MALS is a diagnosis of exclusion. A high grade stenosis will be addressed, but again it is a comprehensive work up. Please feel free to ask questions. There are some amazing people on this site and they have a wide range of experience.