A celiac plexus block is performed to diagnose and reduce abdominal pain caused by conditions such as cancer or pancreatitis. An injection is used to block the nerves serving the abdomen. An intravenous (IV) line may be used to administer medication to relax the patient. http://www.southeasternspine.com/procedures-treatments/celiac-plexus-block/
The celiac plexus or coeliac plexus, also known as the solar plexus because of its radiating nerve fibers, is a complex network of nerves (a plexus) located in the abdomen, where the celiac trunk, superior mesenteric artery, and renal arteries branch from the abdominal aorta. It is behind the stomach and the omental bursa, and in front of the crura of the diaphragm, on the level of the first lumbar vertebra.