Question

What does Liver Duct Obstruction Type III mean? How can the classification of liver duct obstruction be determined?

Answer

The anatomical conditions of extrahepatic bile duct obstruction can be divided into the following types:

  1. Type I: Complete obstruction of the bile duct, gallbladder, bile duct, and common bile duct.
  2. Type II: The gallbladder has a cavity, while other extrahepatic bile ducts are obstructed.
  3. Type III: The gallbladder, gallbladder duct, and common bile duct have cavities, but the bile duct is obstructed. These three types account for 80-90% of liver duct obstruction cases.
  4. Type IV: The upper segment of the bile duct is intact, while the lower segment is obstructed, and both the gallbladder duct and common bile duct are also obstructed.
  5. Type V: The bile duct, gallbladder, and gallbladder duct are all intact, but the common bile duct is obstructed.
  6. Type VI: The upper segments of the bile duct, gallbladder duct, and gallbladder are all intact, but only the lower segment of the common bile duct is obstructed.