Cholelithiasis is the medical term for gallstone disease. Gallstones are concretions that form in the biliary tract, usually in the gallbladder (see the image below).
Cholelithiasis. A gallbladder filled with gallstones (examined extracorporally after laparoscopic cholecystectomy [LC]).
Gallstones develop insidiously, and they may remain asymptomatic for decades. Migration of a a gallstone into the opening of the cystic duct may block the outflow of bile during gallbladder contraction. The resulting increase in gallbladder wall tension produces a characteristic type of pain (biliary colic). Cystic duct obstruction, if it persists for more than a few hours, may lead to acute gallbladder inflammation (acute cholecystitis).
Choledocholithiasis refers to the presence of one or more gallstones in the common bile duct. Usually, this occurs when a gallstone passes from the gallbladder into the common bile duct (see the image below).
Common bile duct stone (choledocholithiasis). The sensitivity of transabdominal ultrasonography for choledocholithiasis is approximately 75% in the presence of dilated ducts and 50% for nondilated ducts. Image courtesy of DT Schwartz.
A gallstone in the common bile duct may impact distally in the ampulla of Vater, the point where the common bile duct and pancreatic duct join before opening into the duodenum. Obstruction of bile flow by a stone at this critical point may lead to abdominal pain and jaundice. Stagnant bile above an obstructing bile duct stone often becomes infected, and bacteria can spread rapidly back up the ductal system into the liver to produce a life-threatening infection called ascending cholangitis. Obstruction of the pancreatic duct by a gallstone in the ampulla of Vater also can trigger activation of pancreatic digestive enzymes within the pancreas itself, leading to acute pancreatitis.[1, 2]
Chronically, gallstones in the gallbladder may cause progressive fibrosis and loss of function of the gallbladder, a condition known as chronic cholecystitis. Chronic cholecystitis predisposes to gallbladder cancer.
Ultrasonography is the initial diagnostic procedure of choice in most cases of suspected gallbladder or biliary tract disease (see Workup).
The treatment of gallstones depends upon the stage of disease. Asymptomatic gallstones may be managed expectantly. Once gallstones become symptomatic, definitive surgical intervention with excision of the gallbladder (cholecystectomy) is usually indicated. Cholecystectomy is among the most frequently performed abdominal surgical procedures (see Treatment). Complications of gallstone disease may require specialized management to relieve obstruction and infection.
Go to Pediatric Cholelithiasis for complete information on this topic.
Cholelithiasis. A gallbladder filled with gallstones (examined extracorporally after laparoscopic cholecystectomy [LC]). Gallstones develop insidiously, and they may remain asymptomatic for decades. Migration of a a gallstone into the opening of the cystic duct may block the outflow of bile during gallbladder contraction. The resulting increase in gallbladder wall tension produces a characteristic type of pain (biliary colic). Cystic duct obstruction, if it persists for more than a few hours, may lead to acute gallbladder inflammation (acute cholecystitis).
Choledocholithiasis refers to the presence of one or more gallstones in the common bile duct. Usually, this occurs when a gallstone passes from the gallbladder into the common bile duct (see the image below).
Common bile duct stone (choledocholithiasis). The sensitivity of transabdominal ultrasonography for choledocholithiasis is approximately 75% in the presence of dilated ducts and 50% for nondilated ducts. Image courtesy of DT Schwartz. A gallstone in the common bile duct may impact distally in the ampulla of Vater, the point where the common bile duct and pancreatic duct join before opening into the duodenum. Obstruction of bile flow by a stone at this critical point may lead to abdominal pain and jaundice. Stagnant bile above an obstructing bile duct stone often becomes infected, and bacteria can spread rapidly back up the ductal system into the liver to produce a life-threatening infection called ascending cholangitis. Obstruction of the pancreatic duct by a gallstone in the ampulla of Vater also can trigger activation of pancreatic digestive enzymes within the pancreas itself, leading to acute pancreatitis.[1, 2]
Chronically, gallstones in the gallbladder may cause progressive fibrosis and loss of function of the gallbladder, a condition known as chronic cholecystitis. Chronic cholecystitis predisposes to gallbladder cancer.
Ultrasonography is the initial diagnostic procedure of choice in most cases of suspected gallbladder or biliary tract disease (see Workup).
The treatment of gallstones depends upon the stage of disease. Asymptomatic gallstones may be managed expectantly. Once gallstones become symptomatic, definitive surgical intervention with excision of the gallbladder (cholecystectomy) is usually indicated. Cholecystectomy is among the most frequently performed abdominal surgical procedures (see Treatment). Complications of gallstone disease may require specialized management to relieve obstruction and infection.
Go to Pediatric Cholelithiasis for complete information on this topic.
ليست هناك تعليقات:
إرسال تعليق