RESUMO
According to Todani's classification, a choledochocele is a cystic dilatation of the distal section of the common bile duct that protrudes into the duodenal lumen. It is also known as a type III choledochal cyst. There are not many cases, and the cause is still unknown. Typically, it is misdiagnosed as a peptic ulcer, as was the case with the patient in this case study. For choledochocele diagnosis, multislice spiral computed tomography and magnetic resonance cholangiopancreatography may be equivalent to endoscopic retrograde cholangiography. Both endoscopic therapy and open surgical care are risk-free possibilities, and the cyst's size influences which strategy should be used. A 35-year-old woman admitted to the hospital with upper abdominal pain caused by a large choledochocele was successfully treated by open surgical management. In this case study, we outline the specifics of her situation and talk about the most recent research on similar cases and how to treat them therapeutically. There is ongoing debate regarding the best course of action. However, to achieve a successful outcome, open surgical care for choledochocele of large size (ie, > 3 cm in diameter) is advised.