eMedicine Specialties > Oncology > Carcinomas of the Gastrointestinal Tract
Carcinoma of the Ampulla of Vater
Updated: Apr 8, 2009
Introduction
Background
Carcinoma of the ampulla of Vater is a malignant tumor arising within 2 cm of the distal end of the common bile duct, where it passes through the wall of the duodenum and ampullary papilla. The common bile duct merges with the pancreatic duct of Wirsung at this point and exits through the ampulla into the duodenum. The most distal portion of the common bile duct is dilated (ie, forms the ampulla of Vater) and is surrounded by the sphincter of Oddi, which spirals upward around the terminal portion of the duct. Because of biliary outflow obstruction, carcinoma of the ampulla of Vater tends to manifest early, as opposed to other pancreatic neoplasms that often are advanced at the time of diagnosis.
Curative surgical resection is the only option for long-term survival. Surgical or radiologic biliary decompression, relief of gastric outlet obstruction, and adequate pain control may improve the quality of life but do not affect overall survival rate.
Pathophysiology
Ninety percent of ampullary tumors are adenocarcinomas. Neuroendocrine tumors, cystadenomas, and adenomas represent additional, but uncommon, histologic types. Tumors originate from ductal epithelial cells and usually invade into the substance of the pancreas. In more advanced disease states, peripancreatic tissue and the adventitia of large neighboring vessels, such as the superior mesenteric and portal veins, may be involved.
Lymph nodes metastases are present in as many as half of patients. Pericanalicular lymph nodes usually are the first to be involved. Nodes along the superior mesenteric, gastroduodenal, common hepatic, and splenic arteries, as well as the celiac trunk, are the second station of lymph nodes. Perineural, vascular, and lymphatic invasion are associated with a poor prognosis. Liver is the most common site (66%) of distant metastasis, followed by lymph nodes (22%). In advanced cases, lung metastasis also may occur.
Frequency
United States
Carcinoma of the ampulla of Vater is an uncommon tumor; fewer than 2000 cases are diagnosed per year. Ampullary cancer accounts for approximately 0.2% of all gastrointestinal tract malignancies and about 7% of all periampullary carcinomas. Adenocarcinoma of the ampulla of Vater is the second most common periampullary malignancy.
International
Worldwide incidence is not known.
Mortality/Morbidity
- Most of these tumors are resectable for cure at diagnosis; however, the 5-year survival rate is only 40%.
- Operative mortality rates have decreased significantly over the last decade because of increased surgical experience, improved anesthesia, better preoperative imaging, and better postoperative management.
- Pancreatic fistulas, prolonged gastric emptying, wound complications, intraabdominal sepsis, thrombophlebitis, and marginal ulceration are the most common complications.
- Postoperative mortality rates in the best centers are 2-5%.
Race
- No race predilection is seen.
Sex
- No sex predilection is seen.
Age
- Ampullary cancer most often is seen in the fifth through the seventh decades of life.
Clinical
History
- Jaundice
- Jaundice is the presenting symptom in three fourths of cases. Ampullary cancer has no additional classic early symptoms.
- Jaundice may intermittently wax and wane because of central necrosis and sloughing or pressure opening of a minimally obstructed duct.
- Other features
- Pruritus
- Loss of appetite
- Dyspepsia and vomiting: These may be present if the duodenal lumen is compromised.
- Progressive weight loss
- Epigastric pain: The abdominal pain usually is dull, aching midepigastric pain or right hypochondriac pain. Backache is usually a sign of advanced stage.
- Diarrhea may occur with this tumor due to the absence of lipase within the gut related to pancreatic duct obstruction.
- Hematemesis, melena, and hematochezia: These are uncommon features caused by tumor bleeding.
Physical
- The Courvoisier sign, painless jaundice associated with a palpable gallbladder, may be present. Unlike that due to a neoplasm, obstructive jaundice due to a stone causes scarring of the gallbladder, precluding its distension.
- Fever can occur in the setting of ascending cholangitis.
- Hepatomegaly can occur.
- Rarely, patients present with features of acute pancreatitis or migratory thrombophlebitis.
- Palpable fixed epigastric masses or supraclavicular nodes are signs of advanced disease and inoperability.
Causes
- The etiology of the disease is poorly understood.
- Patients with familial adenomatous polyposis (FAP) have an increased risk of both benign and malignant ampullary tumors.1
- As many as 50-90% of patients with FAP develop duodenal adenomas, predominantly concentrated on or around the major papilla.2
- Genomic anomalies may be a factor.3
- K-ras mutations may be a factor.4
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References
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Paraskevas KI, Avgerinos C, Manes C, Lytras D, Dervenis C. Delayed gastric emptying is associated with pylorus-preserving but not classical Whipple pancreaticoduodenectomy: a review of the literature and critical reappraisal of the implicated pathomechanism. World J Gastroenterol. Oct 7 2006;12(37):5951-8. [Medline].
Park JS, Yoon DS, Kim KS, Choi JS, Lee WJ, Chi HS. Factors influencing recurrence after curative resection for ampulla of Vater carcinoma. J Surg Oncol. Mar 15 2007;95(4):286-90. [Medline].
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Van Heek NT, De Castro SM, van Eijck CH, et al. The need for a prophylactic gastrojejunostomy for unresectable periampullary cancer: a prospective randomized multicenter trial with special focus on assessment of quality of life. Ann Surg. Dec 2003;238(6):894-902; discussion 902-5. [Medline].
Further Reading
Keywords
periampullary carcinoma, periampullary malignancy, ampullary carcinoma, ampullary cancer, ampullary cancer treatment, ampullary cancer diagnosis, ampullary cancer symptoms, ampullary cancer pictures, carcinoma of papilla of Vater, adenocarcinomas, neuroendocrine tumors, cystadenomas, adenomas, adenocarcinoma of the ampulla of Vater, Courvoisier sign, familial adenomatous polyposis, FAP, duodenal adenomas, endoscopic ultrasonography, EUS, endoscopic retrograde cholangiopancreatography, ERCP, percutaneous transhepatic cholangiography, PTC, kocherization, pancreaticoduodenectomy, pylorus-preserving pancreaticoduodenectomy, transduodenal excision
Overview: Carcinoma of the Ampulla of Vater