Todani type VI bile duct cyst: cystic duct malformation as an uncommon cause of abdominal pain

We report the case of a 62-year-old woman who was admitted for epigastralgia and oral intolerance for 15 days, associating cholestasis in blood tests. A magnetic resonance cholangiography (MRC) revealed the presence of a lobulation continuous with the cystic duct that was consistent with a Todani VI bile duct cyst. The biliary cyst Todani VI is a rare entity within bile duct malformations. The first well-documented case was reported back in 1983, and its inclusion as sixth type in the classification was suggested in 1991. It is an uncommon cause of abdominal pain that we must keep in mind, and the importance of early diagnosis and treatment lies in the condition's oncogenic potential.