American Board of Surgery Qualifying Exam (ABS QE) Practice Test

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Type 5 choledochal cysts are also referred to as what condition?

  1. Caroli's disease

  2. Type 1 choledochal cyst

  3. Type 2 choledochal cyst

  4. Type 4 choledochal cyst

The correct answer is: Caroli's disease

Type 5 choledochal cysts are indeed referred to as Caroli's disease. This condition is characterized by the presence of dilatation of the intrahepatic bile ducts without significant extrahepatic duct involvement. It can lead to complications such as cholangitis and can be associated with liver parenchymal changes and the development of biliary cysts. The name "Caroli's disease" is specifically used to describe this condition because it emphasizes the intrahepatic nature of the bile duct involvement, which is the distinguishing feature when compared to the classifications of other types of choledochal cysts. Understanding this nomenclature helps in recognizing the unique clinical presentations and potential complications associated with the condition.