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Mnemonics, Simplified Concepts & Thoughts

choledochocele todani

Choledochal Cysts : Mnemonic for Todani Classification

Dr. Sulabh Kumar Shrestha, MS Orthopedics, Mar 2, 2018Mar 2, 2018

Last updated on March 2, 2018

 

choledochocele todani

Todani Classification of Choledochal cysts

Mnemonic: Consider I is “Extrahepatic” and V is “Intrahepatic”, then –

  • Type I, II and III = Extrahepatic
  • Type IV = Extrahepatic + Intrahepatic
  • Type V = Intrahepatic

Most common: Type I

2nd most common: Type IV

Type I-III: Extrahepatic

Mnemonic: 123 EDC

Type I: Entire CBD dilated

Type II: Diverticulum

Type III: Choledochocele (Intraduodenal portion of CBD)

Type IV: Extrahepatic + Intrahepatic

Mnemonic: A for “And or Additional” and B for “Bunch”

Type IVa: Both intrahepatic AND extrahepatic cysts

Type IVb: Multiple extrahepatic cysts only

Type V: Intrahepatic cysts only (Caroli’s disease)

dr. sulabh kumar shrestha
Dr. Sulabh Kumar Shrestha, MS Orthopedics

He is the section editor of Orthopedics in Epomedicine. He searches for and share simpler ways to make complicated medical topics simple. He also loves writing poetry, listening and playing music.

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PGMEE, MRCS, USMLE, MBBS, MD/MS Gastrointestinal systemGeneral SurgeryPediatrics

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  1. vanscoyhair says:
    Mar 16, 2018 at 8:35 pm

    Thank you. Interesting.

    Reply

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Shrestha SK. Choledochal Cysts : Mnemonic for Todani Classification [Internet]. Epomedicine; 2018 Mar 2 [cited 2025 May 9]. Available from: https://epomedicine.com/medical-students/choledochal-cysts-mnemonic-todani-classification/.

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