 Subsequently, patients will undergo a celiac plexus block, performed endoscopically with EUS- guidance by Ann Chen. Injections will be performed using 0.75 bupivicaine and 40mgml of triamcinolone, ideally 1ml each directly into the celiac ganglia. If no ganglia is identifiable, then the injection will be performed into the celiac space, located at the take off of the celiac artery from the aorta. One week after their block, a gastric emptying study and Ansar testing will be performed. The GCSI-DDVAS questionnaire will be repeated 1 week, 2 weeks, 3 weeks, and 2 months after the procedure. 