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A gallstone is a stone formed within the gallbladder from precipitated bile components. [2] The term cholelithiasis may refer to the presence of gallstones or to any disease caused by gallstones, [5] and choledocholithiasis refers to the presence of migrated gallstones within bile ducts. Most people with gallstones (about 80%) are asymptomatic.
Although unusual, it is possible to have a common bile duct stone despite prior cholecystectomy. One study found that in patients diagnosed with choledocholithiasis, 28% had undergone prior cholecystectomy. Such stones are thought to be the result of stones missed at the time of the cholecystectomy, as opposed to the formation of new stones. [3]
[3] [7] These sequences show high signal in static or slow moving fluids within the gallbladder, biliary ducts and pancreatic duct, with low signal of surrounding tissue. Secretin is also given to a patient to increase ductal compliance, making imaging easier.
The human gallbladder is a hollow grey-blue organ that sits in a shallow depression below the right lobe of the liver. [2] In adults, the gallbladder measures approximately 7 to 10 centimetres (2.8 to 3.9 inches) in length and 4 centimetres (1.6 in) in diameter when fully distended. [3]
Most affected individuals do not have symptoms. The gallbladder polyps are detected during abdominal ultrasonography performed for other reasons. [citation needed] The incidence of gallbladder polyps is higher among men than women. The overall prevalence among men of Chinese ancestry is 9.5%, higher than other ethnic types. [7]
Extraction of choledocholithiasis and/or intrahepatic stones: choledocholithiasis is the presence of gallstones within the common bile duct. They can be either primary (formed within the duct) or secondary (entering the duct from the gallbladder). Biliary endoscopic sphincterotomy allows for opening of the sphincter of Oddi, allowing stones to ...
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Human gallstones, all removed from one patient. Grid scale 1 mm. Calculi in the inner ear are called otoliths; Calculi in the urinary system are called urinary calculi and include kidney stones (also called renal calculi or nephroliths) and bladder stones (also called vesical calculi or cystoliths).