Gallbladder cancer is a relatively uncommon cancer, with an incidence of fewer than 2 cases per 100,000 people per year in the United States. It is particularly common in central and South America, central and eastern Europe, Japan and northern India; it is also common in certain ethnic groups e.g. Native American Indians and Hispanics. If it is diagnosed early enough, it can be cured by removing the gallbladder, part of the liver and associated lymph nodes. Most often it is found after symptoms such as abdominal pain, jaundice and vomiting occur, and it has spread to other organs such as the liver.
It is a rare cancer that is thought to be related to gallstones building up, which also can lead to calcification of the gallbladder, a condition known as porcelain gallbladder. Porcelain gallbladder is also rare. Some studies indicate that people with porcelain gallbladder have a high risk of developing gallbladder cancer, but other studies question this. The outlook is poor for recovery if the cancer is found after symptoms have started to occur, with a 5-year survival rate close to 3%.
Signs and symptoms
- Steady pain in the upper right abdomen
- Dyspepsia (gas)
- Bilious vomit
- Loss of appetite
- Weight loss
- Jaundice and vomiting due to obstruction
Early symptoms mimic gallbladder inflammation due to gallstones. Later, the symptoms may be that of biliary and stomach obstruction.
Of note, Courvoisier's law states that in the presence of a palpably enlarged gallbladder which is nontender and accompanied with mild painless jaundice, the cause is unlikely to be gallstones. This implicates possible malignancy of the gallbladder or pancreas, and the swelling is unlikely due to gallstones due to the chronic inflammation association with gallstones leading to a shunken, non-distensible gallbladder. However, Ludwig Georg Courvoisier's original observations, published in Germany in 1890, were not originally cited as a 'law', and no mention of malignancy or pain (tenderness) was made. These points are commonly misquoted or confused in the medical literature.
- Gender— approximately twice as common in women than men, usually in seventh and eighth decades
- Chronic cholecystitis and cholelithiasis
- Primary sclerosing cholangitis
- Chronic typhoid infection of gallbladder; chronic Salmonella typhi carriers have 3 to 200 times higher risk of gallbladder cancer than non-carriers and 1–6% lifetime risk of development of cancer
- Various single nucleotide polymorphisms (SNPs) have been shown to be associated with gallbladder cancer; however, existing genetic studies in GBC susceptibility have so far been insufficient to confirm any association
Early diagnosis is not generally possible. People at high risk, such as women or Native Americans with gallstones, are evaluated closely. Transabdominal ultrasound, CT scan, endoscopic ultrasound, MRI, and MR cholangio-pancreatography (MRCP) can be used for diagnosis. A large number of gallbladder cancers are found incidentally in patients being evaluated for cholelithiasis, or gallstone formation, which is far more common. A biopsy is the only certain way to tell whether or not the tumorous growth is malignant.
Gallbladder adenocarcinoma histopathology
Xanthogranulomatous cholecystitis (XGC) is a rare form of gallbladder disease which mimics gallbladder cancer although it is not cancerous. It was first discovered and reported in the medical literature in 1976 by J.J. McCoy, Jr., and colleagues.
The most common and most effective treatment is surgical removal of the gallbladder (cholecystectomy) with part of liver and lymph node dissection. However, with gallbladder cancer's extremely poor prognosis, most patients will die within a year of surgery. If surgery is not possible, endoscopic stenting of the biliary tree can reduce jaundice and a stent in stomach may relieve vomiting. Chemotherapy and radiation may also be used with surgery. If gallbladder cancer is diagnosed after cholecystectomy for stone disease (incidental cancer), re-operation to remove part of liver and lymph nodes is required in most cases. When it is done as early as possible, patients have the best chance of long-term survival and even cure.
- Gallbladder cancer is relatively rare, affecting fewer than 5000 people in the United States per year
- Gallbladder cancer is more common in South American countries, Japan, and Israel; n Chile, gallbladder cancer is the fourth most common cause of cancer deaths.
- 5th most common gastrointestinal cancer
- Up to 5 times more common in women than men depending on population (e.g. 73% female in China
- The age adjusted incidence rates of gall bladder cancer is highest in Chile, followed by in the state of Assam in India
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