Background. At the stage of development of the OLT technique (orthotopic liver transplantation), the frequency of biliary complications reached 50%. However, according to transplant centers, biliary complications occur in 10-35% of cases after OLT. According to M. Moser, every 8th liver transplantation is accompanied by the development of one or another type of biliary complication.

Materials and methods. From December 1, 2011 to January 1, 2023 at the National Research Center of A.N. Syzganov performed 178 LT (liver transplantations) from a living related donor. According to the anatomical types of bile ducts of donors, the following were established: type A in 135 (75.8%), type B in 16 (8.9%), type C in 27 (15.3%). Correction of biliary complications was carried out using minimally invasive methods (ERCP + endobiliary stenting, PCHS, Rendezvous method, magnetic compression anastomosis method), as well as by open surgery (GEA, ReTP).
Results. In the postoperative period, 27 (15.2%) patients developed BO, of which 23 (85.2%) had cicatricial strictures of the bilio-biliary anastomosis, and bile leakage was observed in 4 (14.8%) cases. According to the types of bile ducts, BO developed: type A in 17 (12.6%), type B in 3 (18.75%), type C in 7 (26%). Methods for correcting biliary complications were divided into two periods: from 2011-2017 and from 2018-2023. From 2011-2017, 9 (56.3%) patients were treated with a minimally invasive method, and 7 (43.7%) patients underwent open surgery. ) patients, while from 2018-2023 11 (100%) patients were treated with minimally invasive methods.
Conclusion.  In most cases, biliary complications developed in patients with type C . Experience shows that BCs can be well corrected using minimally invasive technologies (with a multidisciplinary approach and an experienced specialist).