Choledochal cyst

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Todani Classification

Type I: Solitary fusiform, most extrahepatic (90%)
Type II: Extrahepatic supraduodenal diverticulum
Type III: Intraduodenal diverticulum, choledochocele
Type IV: Fusiform & intrahepatic cysts
Type V: Multiple intrahepatic cysts, Caroli disease

  • F:M 4:1
  • Present with abdominal pain, RUQ mass and jaundice
  • 80% of patients with Caroli disease have Medullary sponge kidney