A celiac plexus block is a medical procedure used to relieve abdominal pain, particularly in patients with conditions like pancreatic cancer or chronic pancreatitis. It involves injecting anesthetic medication near the celiac plexus, a group of nerves located behind the stomach that supplies sensation to the abdominal organs. This block can help reduce pain by interrupting nerve signals. The procedure is typically performed using imaging guidance, such as ultrasound or CT scan, to ensure accurate placement of the needle. Patients may experience significant pain relief, which can improve their quality of life and reduce the need for pain medications.