RT Journal Article T1 Anatomy variant symptomatic of the duplication of the common bile duct type IV. T2 Variante anatómica sintomática de la duplicación de la vía biliar común tipo IV. A1 Alberca-Páramo, Ana A1 García-Santos, Esther Pilar A1 Padilla-Valverde, David A1 Villarejo-Campos, Pedro A1 Estaire-Gómez, Mercedes A1 Fernández, Jesús Martín K1 Acessory common bile duct K1 Common bile duct K1 Conducto biliar común K1 Conducto biliar común accesorio K1 Duplicación K1 Duplication AB Duplicity of the common bile duct (BCBD) is an unusual congenital disorder. A 80-year-old woman with duplication of the common bile duct with retrograde endoscopic cholangiopancreatography (ERCP) who did not resolve the symptoms. Our case is a variant of type IV to the classification of DCBC. The MR cholangiography and presurgical ERCP allows assessment of the bile ducts, their caliber, and assessment of abnormalities. The treatment before DCBC will depend on the clinic and the type of opening of the CBCA. It is important to perform a pre-surgical study and during surgery with CIO. YR 2020 FD 2020 LK http://hdl.handle.net/10668/15738 UL http://hdl.handle.net/10668/15738 LA en DS RISalud RD Aug 5, 2025