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Gastroenterology. Gallstone ileus is a rare form of small bowel obstruction caused by an impaction of a gallstone within the lumen of the small intestine. Such a gallstone enters the bowel via a cholecysto - enteric fistula. The presence of large stones, >2.5 cm in diameter, within the gallbladder are thought to predispose to fistula formation ...
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 ...
21–22. Right and left kidneys. The front border of the liver has been lifted up (brown arrow). [ 3] The bile duct[ 1][ 4] (formerly known as the common bile duct[ 4]) is a part of the biliary tract. [ 4] It is formed by the union of the common hepatic duct and cystic duct. It ends by uniting with the pancreatic duct to form the ...
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] The gallbladder has a capacity of about 50 millilitres (1.8 imperial fluid ounces). [2] The gallbladder is shaped like a pear, with its tip opening into the cystic duct. [4]
The queens are considerably larger than workers. Queens can exceed 50 mm (2 in), while workers are between 35 and 40 mm (1 + 2 ⁄ 5 and 1 + 3 ⁄ 5 in). The reproductive anatomy is consistent between the two, but workers do not reproduce. [29]
The Schwarzschild radius or the gravitational radius is a physical parameter in the Schwarzschild solution to Einstein's field equations that corresponds to the radius defining the event horizon of a Schwarzschild black hole. It is a characteristic radius associated with any quantity of mass. The Schwarzschild radius was named after the German ...
Battle of the Big Hole. / 45.64750°N 113.65083°W / 45.64750; -113.65083. 70–90 killed of whom perhaps thirty were warriors. The Battle of the Big Hole was fought in Montana Territory, August 9–10, 1877, between the United States Army and the Nez Perce tribe of Native Americans during the Nez Perce War. Both sides suffered heavy ...
Most polyps are benign and do not need to be removed. Surgical removal of the gallbladder (cholecystectomy) is recommended when a gallbladder polyp larger than 1 cm is found, even if the person has no symptoms clearly related to the polyp. Laparoscopic surgery is an option for small or solitary polyps. [citation needed]