Internal - Diseases of the Gallbladder and Bile Ducts Flashcards
Which one is the most important factor in gall clearence?
A) gastrin
B) nitrogen monoxide
C) secretin
D) cholecystokinin
E) VIP
D) cholecystokinin
The hormonal regulation by cholecystokinin (CCK) is the most important factor in postprandial gallbladder contractions, cholinerg mechanism is less important. CCK, which is secreted in as a consequence of a meal relaxes the Oddi sphincter, which facilitates the transposition of the bile to the duodenum. In addition to CCK, secretin is another important agent relaxing the Oddi sphincter. Moreover, noradrenergic and cholinergic neurons secreting VIP and nitrogen monoxide are also involved in relaxing the Oddi sphincter (see also BGY-8.6.)
Which one is the most frequent gallstone?
A) Cholesterol stone
B) Bilirubin stone
C) Mixed stone
D) Oxalate stone
A) Cholesterol stone
There are two main types of gallstones. Cholesterol stones are the most frequent in the Western world (75-80%), while bilirubin stones are more frequent in Asia. Cholesterol stones are generated in the gallbladder, while bilirubin stones can also be generated in the bile ducts. Note that oxalate stones are generally kidney stones.
Which symptom is not characteristic to disorders of biliary excretion?
A) abdominal distension
B) ”fullness” feeling
C) severe steatorrhoea
D) abdominal discomfort
E) pain under the right ribs
C) severe steatorrhoea
Abdominal distension and discomfort, ”fullness” feeling and pain under the right ribs are all characteristic to disorders of biliary excretion. However, severe steatorrhoea is characteristic to malabsorption and pancreatic insufficiency. In physiological cases, with a daily 75 g fat intake the daily excreted faeces consists no more than 7 g of fat. However, in cases of malabsorption 20-40% and in cases of pancreatic insufficiences 60% of the daily fat intake can be excreted with the faeces resulting in severe steatorrhoea.
How often is the outlet of the ductus choledochus and the ductus pancreaticus joint (Ampulla of Vater)?
A) 10%
B) 30%
C) 50%
D) 70%
E) 90%
E) 90%
In 90% of the cases there is a joint duct and outlet of the ductus pancreaticus and the ductus choledochus resulting in the so-called Ampulla of Vater. Frequently, and accessorial pancreatic duct also exists (duct of Santorini) ending in the ductus pancreaticus in the majority of the cases, however sometimes an independent outlet may also be present. In 5-10% of the cases, when pancreas divisum exists ductus pancreaticus does not communicate with the ductus choledochus (see also BGY-8.27.).
Which of the following agents facilitate biliary excretion?
1) CCK
2) secretin
3) bile salts
4) adrenalin
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
Bile salts, secretin and cholecytokinin (CCK) also facilitate biliary excretion. The enterohepatic circulation stimulated by bile salts allocate bile to the liver resulting in biliary secretion. Biliary excretion is also facilitated by the bile secretion-stimulating effects of secretin. The hormonal regulation by cholecystokinin (CCK) is the most important factor in postprandial gallbladder contractions. CCK, which is secreted in as a consequence of a meal relaxes the Oddi sphincter, which facilitates the transposition of the bile to the duodenum. Stimulation of the nervus vagus also results in gallbladder contractions and relaxation of the Oddi sphincter, while sympatic stimulation (adrenalin) results in contrary consequences (see also BGY-8.1.).
What is the procedure to choose in case of incidentally discovered gallstones not causing any symptomes?
1) surgical removal of the gallbladder
2) lithotripsy performed with ultrasound
3) starting a lasting gallstone solubilizer medication
4) informing the patient of the gallstones and personalized therapeutic consideration
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
D) only 4th answer is correct
Gallstones do not cause symptoms in a large portion of the cases, these ”silent” stones generally do not require therapy, however the patients should be informed. Profylactic cholecystectomy in patinets without any symptoms is generally not justifiable. Symptoms occur in 20% of the patients. In these latter cases it is an indication for operation.
Which of the following does decrease the spasm of the Oddi sphincter?
1) nitrates
2) chocolate
3) cholecystokinin
4) morphine
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
Nitrates, chocolate and cholecystokinin decreases, while morphin increases the spasm of the Oddi sphincter. Cholecystokinin has a pivotal role in the postprandial relaxation of the Oddi sphincter. Chocolate also decreases the spasm of the Oddi sphincter. Additionally, nitrates may be therapeutically applied in cases of biliary colic. Contrary, giving major analgeticum (morphin) in cases of biliary colic is not recommended, because it may result in sphincter spasm enhancing the pain, and it may also mask the clinical manifestation of an acute abdominal catastrophe (perforation of the gallbladder).
What are the indications of endoscopic sphincterotomy?
1) choledocholithiasis
2) Oddi-sphincter-dyskinesis
3) acute recidive gallbladder attack resulting in acute pancreatitis
4) carcinoma of the pancreatic head
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
A) 1st, 2nd and 3rd answers are correct
Indications for endoscopic sphincterotomy during ERCP include choledocholithiasis, Oddi-sphincter-dyskinesis and acute recidive gallbladder attack resulting in acute pancreatitis. Main aim of the intervention is to assure optimal bile excretion and flow and prevent the emergence of a secondary inflammation. Sphincterotomy is indispensable for the proper removal of a stone, however in cases of carcinoma of the pancreatic head only an operation can be curable. In palliative cases sphincterotomy is also inssufficient, since implantation of a stent is also needed.
Which of the following procedures are useful for functional examination of the gallbladder?
1) liver scintigraphy
2) MRCP (magnetic resonance cholangiopancreatography)
3) intravenous urography
4) cholescintigraphy
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
C) 2nd and 4th answers are correct
Functional examination of the gallbladder and the bile ducts can be carried out using cholescintigraphy, cholangio-CT and cholangio-MR. During cholescintigraphy, isotope-labeled agents which are metabolised by the hepatocytes and secreted into the bile are administered and detected using gamma camera. In the case of obstruction of the bile ducts when ultrasound examination cannot detect the cause of the obstruction or when ERCP is not recommended, cholangio-CT and cholangio-MR might help the diagnosis. Nowadays classical oral or intravenous cholangiocholecystography is only rarely performed. Intravenous urography is a false answer.
Which enzyme of the bile contributes to fat digestion?
1) lipase
2) cholic acid
3) colipase
4) neither of the aforementioned
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
D) only 4th answer is correct
Lipase and colipase are not bile components, while cholic acid is not enzyme, therefore the correct answer is that neither of them is an enzyme of the bile contributing to fat digestion. Fat digestion is performed in two, consecutive processes. Firstly, pancreatic lipase performs hydrolysis, which is followed by the dispersion of the fatty acids and the monoglycerides. During the enterohepatic circulation, bile acids are secreted into the bile, which is followed by their absorption from the bowel (see also BGY-8.16.).
What is the Courvoisier-sign?
1) pain under the right ribs + jaundice + fever
2) jaundice + melaena + epigastric pain
3) fever + jaundice + tactile resistance in the upper abdomen
4) tactile, not painful enlarged gallbladder
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
D) only 4th answer is correct
In cases of carcinoma of the major duodenal papilla or of the pancreatic head, additionally to intensifying mechanical icterus, the enlargement of the gallbladder, which is not painful is also a major characteristic (Courvoisier-sign). It is separable from the obstruction from the ductus cysticus after biliary colic, which results in an enlarged, tactile gallbladder hydrops which is a painful, tense mass under the right ribs.
Which of the following diseases can cause direct hyperbilirubinaemia?
1) Gilbert’s syndrome
2) Rotor syndrome
3) haemolysis
4) choledocholithiasis
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
C) 2nd and 4th answers are correct
Rotor syndrome and choledocholithiasis can cause direct hyperbilirubinaemia. Rotor syndrome is a rare, autosomal recessive disorder, when damage in the active transport results in the inhibited secretion of the conjugated bilirubin into the bile. The elevated levels of conjugated bilirubin in the blood results in direct hyperbilirubinaemia. Dubin-Johnson syndrome is similar to Rotor syndrome, however in Dubin-Johnson syndrome melanin accumulation in the hepatocytes results in macroscopically black liver. The majority of posthepatic icterus is due to choledocholithiasis, which results also in direct hyperbilirubinaemia.
What is the most important differentiating laboratory parameter in cases of obstructive jaundice?
1) elevated direct bilirubin
2) elevated total bilirubin
3) elevated urinary UBG
4) no UBG in the urine
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
D) only 4th answer is correct
In cases of obstructive jaundice, urinary UBG levels decrease in accordance with the extent of the obstruction and, after total obstruction, urinary UBG is no longer detectable. The colour of the faeces is becoming lighter as well resulting in acholic faeces. In cases of prehepatic or hepatic jaundice, urinary UBG levels are elevated. In obstructive jaundice, total bilirubin and direct bilirubin levels are elevated, jaundice occurs in cases of partial obstruction as well.
Which statements are true regarding biliary functions and blood cholesterol levels?
1) Elevated biliary functions elevate blood cholesterol levels.
2) Elevated biliary functions decrease blood cholesterol levels.
3) Elevated biliary functions elevate LDL levels.
4) Bile is the only elimination route for cholesterol from the body.
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
C) 2nd and 4th answers are correct
Cholesterol is insoluble in water, however it is soluble in the bile. Bile is the only elimination route for cholesterol from the body. Elevated biliary functions decrease blood cholesterol levels. If the amount of cholesterol increases beyond a level or the amount of bile acids decreases, cholesterol precipitates resulting in stone formation. Damaged biliary function (intrahepatic or extrahepatic jaundice) results in elevated levels of blood cholesterol (see also BGY-8.2. and BGY-8.18. - Card 2 & 15).
Which of the following may be the complication of gallstones?
1) obstructive jaundice
2) acute pancreatitis
3) cholecystitis
4) chronic pancreatitis
A) 1st, 2nd and 3rd answers are correct
B) 1st and 3rd answers are correct
C) 2nd and 4th answers are correct
D) only 4th answer is correct
E) all of the answers are correct
E) all of the answers are correct
The most common complication of gallstones is obstructive jaundice, acute panreatitis and cholecystitis. In 15-20% of gallbladder stone cases, choledocholithiasis is present as well, which is the main cause of the obstructive jaundice. Gallstones jammed into the major duodenal papilla causes acute biliary pancreatitis. In some cases, the resence of gallstone or sludge is not present during the diagnosis, because it has already passed over the major duoenal papilla. In 90% of the acute cholecystitis cases, gallstone jammed into the ductus cysticus is the cause. Local irritation and refractory acute inflammations may cause chronic cholecystitis as well. In 4% of the chronic pancreatitis cases gallstones are the main cause of the disease (see also. BGY-8.17. - Card 14).
Solubizing the gallstone which is smaller than 2 cm and has been formed during pregancy is advised later, because pregnancy is only a temporary state predisposing to gallstone formation.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
A) both the statement and the explanation are true and a causal relationship exists between them.
Pregnancy associates with elevated cholesterol secretion and decreased motility of the gallbladder and therefore is a temporary predisposition factor for gallstone formation. Orally administered bile acids may alter the components of the bile and therefore smaller gallstones may be solubilized. This can be true for gallstones formed during pregnancy as well. Therefore both statements are true and there is a causal link between them (see also BGY-8.7.).
All gallstones should be surgically removed, because gallstone is formed only in permanently functionally damaged gallbladders.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
E) both the statement and the explanation are false
Gallbladders do not cause symptoms in the majority of the cases, these are the so-called ”silent” stones. In these cases, therapy is not advised, nor is surgical involvement needed. Clinical symptoms only arise in 20% of the patients, when surgical removal is the definitive therapy. Functionally damaged gallbladder is only one predisposing factor for gallstone formation (see also BGY-8.8. and BGY-8.31.).
Sudden dieting does not predispose to gallstone formation, because environment in non-functioning gallbladders favors gallstone formation.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
D) the statement is false, but the explanation itself is true
Sudden dieting results in decreased bile acid synthesis, elevated cholesterol secretion to the bile and decreased motility of the gallbladder, all predisposing to gallstone formation. Environment in non-functioning gallbladders favors gallstone formation. First statement is false, second statement is true (see also BGY-8.7.).
Laparoscopic cholecystectomy is a lower load for the patient compared to open cholecystectomy, because the abdomen is not opened in a large surface.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
A) both the statement and the explanation are true and a causal relationship exists between them.
Nowadays, laparoscopic cholecystectomy is more routinely used compared to open cholecystectomy. Since the abdomen is not opened on a large surface, laparoscopic cholecystectomy results in a lower load for patients, resulting in shorter hospitalization. Therefore both statements are true and there is a causal link between them.
Abdominal ultrasound examination can detect gallbladder carcinoma with great security, therefore gallbladdder carcinoma is usually detected at early stage.
A) both the statement and the explanation are true and a causal relationship exists between them;
B) both the statement and the explanation are true but there is no causal relationship between them;
C) the statement is true, but the explanation is false;
D) the statement is false, but the explanation itself is true
E) both the statement and the explanation are false
E) both the statement and the explanation are false
Symptoms of gallbladder carcinoma are not characteristic and at early stage are the same as of cholelithiasis. One third of the patients do not have symptoms until the first general tumor symptoms arise. Laboratory findings are not characteristic. Abdominal ultrasound examination and other imaging techniques can only detect gallbladder cancer at later stages, when curative operations cannot be performed. Therefore the prognosis of gallbladder carcinoma is very poor: 80% of the cases are inoperable, five-year-survival is 1-3%, mean survival is 6 months. Both statements are false.