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364 Section II / General Surgery

C h a p t e r 54

Biliary Tract

ANATOMY

 

 

 

Name structures 1 through 8 (below) of the biliary tract:

Which is the proximal and which is the distal bile duct?

What is the name of the node in Calot’s triangle?

What are the small ducts that drain bile directly into the gallbladder from the liver?

1.Intrahepatic ducts

2.Left hepatic duct

3.Right hepatic duct

4.Common hepatic duct

5.Gallbladder

6.Cystic duct

7.Common bile duct

8.Ampulla of Vater

Proximal is close to the liver (bile and the liver is analogous to blood and the heart; they both flow distally)

Calot’s node

Ducts of Luschka

Which artery is susceptible

Right hepatic artery, because of its

to injury during

proximity to the cystic artery and Calot’s

cholecystectomy?

triangle

What is the name of the

Spiral valves of Heister

valves of the gallbladder?

 

Where is the infundibulum

Near the cystic duct

of the gallbladder?

 

Where is the fundus of the

At the end of the gallbladder

gallbladder?

 

 

 

Chapter 54 / Biliary Tract 365

What is “Hartmann’s pouch”?

Gallbladder infundibulum

What are the boundaries of

The 3 C’s:

the triangle of Calot?

1.

Cystic duct

 

2.

Common hepatic duct

 

3.

Cystic artery

 

 

3

2

1

“Dr. Blackbourne, are you absolutely sure that the Triangle of Calot includes the cystic artery and not the liver edge?”

PHYSIOLOGY

Yes, look up Gastroenterology, 2002; 123(5):1440

What is the source of

Bile duct epithelium; expect alkaline

alkaline phosphatase?

phosphatase to be elevated in bile duct

 

obstruction

What is in bile?

Cholesterol, lecithin (phospholipid), bile

 

acids, and bilirubin

What does bile do?

Emulsifies fats

What is the enterohepatic

Circulation of bile acids from liver to gut

circulation?

and back to the liver

Where are most of the bile

In the terminal ileum

acids absorbed?

 

What stimulates gallbladder

Cholecystokinin and vagal input

emptying?

 

What is the source of

Duodenal mucosal cells

cholecystokinin?

 

What stimulates the release

Fat, protein, amino acids, and HCl

of cholecystokinin?

 

366 Section II / General Surgery

 

What inhibits its release?

Trypsin and chymotrypsin

What are its actions?

Gallbladder emptying

 

Opening of ampulla of Vater

 

Slowing of gastric emptying

 

Pancreas acinar cell growth and release

 

of exocrine products

PATHOPHYSIOLOGY

 

 

 

At what level of serum total bilirubin does one start to get jaundiced?

Classically, what is thought to be the anatomic location where one first finds evidence of jaundice?

With good renal function, how high can the serum total bilirubin go?

What are the signs and symptoms of obstructive jaundice?

What causes the itching in obstructive jaundice?

Define the following terms: Cholelithiasis

2.5

Under the tongue

Very rarely, 20

Jaundice Dark urine

Clay-colored stools (acholic stools) Pruritus (itching)

Loss of appetite Nausea

Bile salts in the dermis (not bilirubin!)

Gallstones in gallbladder

Cholethiasis

7 0 ‘

f r

h

Chapter 54 / Biliary Tract 367

Choledocholithiasis

Gallstone in common bile duct

rf h

‘07

Gallstone in common bile duct

Cholecystitis Inflammation of gallbladder

 

h

 

 

r

 

 

f

 

 

 

 

0

 

 

7

Stone

 

 

 

 

in neck

 

Inflammation

 

Cholangitis

Infection of biliary tract

 

Cholangiocarcinoma

Adenocarcinoma of bile ducts

 

Klatskin’s tumor

Cholangiocarcinoma of bile duct at the

 

junction of the right and left hepatic

 

ducts

 

Biliary colic

Pain from gallstones, usually from a stone

 

at cystic duct: The pain is located in the

 

RUQ, epigastrium, or right subscapular

 

region of the back; it usually lasts minutes

 

to hours but eventually goes away; it

 

is often postprandial, especially after

 

fatty foods

 

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