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A.D.A.M. Medical Encyclopedia [Internet]. Atlanta (GA): A.D.A.M.; 2013.

A.D.A.M. Medical Encyclopedia.

Endoscopic retrograde cholangio pancreatography (ERCP) - series

Last reviewed: July 6, 2009.

Normal anatomy

The stomach leads to the first part of the small intestine, also called the duodenum. The common bile duct carries bile from the liver to the duodenum, and enters the duodenum a few centimeters beyond the stomach.

Normal anatomy

Indication

Gallstones usually form in the gallbladder. Gallstones sometimes pass from the gallbladder into the common bile duct, and block the flow of bile into the duodenum. This can result in serious illness. Additionally, tumors of the pancreas and duodenum can block the bile duct, also preventing the flow of bile into the duodenum.

Indication

Procedure, part 1

ERCP is a technique in which an endoscope, with a camera on its end, is passed down the esophagus, through the stomach, and into the duodenum. The entrance of the common bile duct into the duodenum can be viewed through the endoscope. Next, the surgeon can pass a special instrument on the end of the endoscope into the common bile duct as it enters the duodenum. Dye is injected through this instrument into the common bile duct; this allows for the visualization of gallstones by X-ray.

Procedure, part 1

Procedure, part 2

If gallstones are present in the common bile duct, the surgeon can perfom a sphincterotomy. A small incision is made through the endoscope, which enlarges the opening of the common bile duct into the duodenum. The stones can then pass through.

Procedure, part 2

Procedure, part 3

If a tumor is present and constricting the bile duct, a plastic or metal stent can be placed into the bile duct, thus holding it open, and allowing bile to pass through.

Procedure, part 3

Review Date: 7/6/2009.

Reviewed by: Reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. Also reviewed by George F Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program San Diego, California.

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What works?

  • Prophylactic cholecystectomy should be offered to patients whose gallbladders remain in‐situ after endoscopic sphincterotomy and common bile duct clearanceProphylactic cholecystectomy should be offered to patients whose gallbladders remain in‐situ after endoscopic sphincterotomy and common bile duct clearance
    Surgical removal of the gallbladder is done routinely. Stones in the common bile duct usually come from the gallbladder and can be harmful. The usual treatment for gallstones that are in the common bile duct is endoscopic retrograde cholangiopancreatography (ERCP) and sphincterotomy. ERCP is an endoscopic procedure to remove stones from the common bile duct. More stones may enter the common bile duct from the gallbladder but it is not clear if the gallbladder should be removed preventively (prophylactic cholecystectomy) or if a wait‐and‐see policy (cholecystectomy deferral) would be better. We included 5 randomised trials with 662 participants out of 93 publications identified through the literature searches. The number of deaths was 47 in the wait‐and‐see group (334 patients) compared with 26 in the prophylactic cholecystectomy group (328 patients). This review of randomised clinical trials suggests that early removal of the gallbladder decreases the risk of death or of complications from gallstones. The number of patients (662) reviewed in this report prevents some of the subgroup analyses from being conclusive. Further clinical trials, particularly of high‐risk patients, would solve this problem.
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