The celiac plexus is a group of nerves behind the organs of the abdomen. It carries pain "messages" from the pancreas, liver, kidney, gall bladder, spleen and bowels. The block is used to treat pain from chronick pancreatitis and  cancer pain.
Blockade of the celiac plexus with local anesthetics can block abdominal pain. When agents such as alcohol or phenol are substituted for the local anesthetic, the results can persist for monthsor years. Patients will often get such significant pain relief by celiac plexus block that their use of other medications or narcotics will decrease dramatically.

The anatomy of the structures surrounding the celiac plexus are complex. To increase the success rate and to limit complications, we use the CT scan or fluoroscopy (special types of x-rays) for guidance in the acute placement of the medication.

Side effects are minimal. The most common is low blood pressure and a feeling of being light headed when standing up rapidly. This decreases with time. Other complications relate to needle placement and will be discussed by your physician prior to the procedure.

Recovery time varies, a few days of light activity is suggested following the block. If your occupation requires strenuous activity you may be required to take additional days off from work.
Some medications that alter your blood's clotting factor (such as Aspirin) must be stopped prior to this procedure.