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Choledochal cysts: classification and cholangiographic appearance.

S J Savader1, J F Benenati, A C Venbrux

  • 1Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD 21205.

AJR. American Journal of Roentgenology
|February 11, 1991
PubMed
Summary

This study outlines a classification system for choledochal cysts, which are rare congenital biliary anomalies. The most common type involves cystic or fusiform dilatation of the common bile duct, accounting for most cases.

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Area of Science:

  • Gastroenterology and Hepatology
  • Pediatric Surgery
  • Medical Imaging

Background:

  • Choledochal cysts are uncommon congenital anomalies affecting the biliary system.
  • They present as cystic dilatations within the extrahepatic or intrahepatic biliary tree.
  • Understanding their classification is crucial for diagnosis and management.

Purpose of the Study:

  • To present a comprehensive classification scheme for choledochal cysts.
  • To illustrate the characteristic appearance of choledochal cysts on cholangiograms.
  • To aid in the accurate diagnosis and categorization of these biliary anomalies.

Main Methods:

  • Review and synthesis of existing literature on choledochal cyst classification.
  • Illustration of choledochal cyst morphology using cholangiographic images.

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  • Development of a standardized five-type classification system.

    • Main Results:

    • A five-type classification system for choledochal cysts is proposed.
    • The most frequent type, characterized by cystic or fusiform dilatation of the common bile duct, comprises 80-90% of cases.
    • Cholangiographic findings are presented to exemplify each cyst type.

    Conclusions:

    • The proposed classification system provides a structured approach to categorizing choledochal cysts.
    • Accurate classification based on imaging is essential for effective clinical management.
    • This scheme aids in standardizing the description and understanding of these congenital biliary malformations.