Despite technological advancements in living donor liver transplantation (LDLT), biliary complications (BC), including biliary anastomotic stricture (BAS) and bile leak (BL), remain unresolved issues that significantly affect patient outcomes. Biliary stenting has emerged as a potential method for reducing BC in LDLT procedures; however, their necessity remains debated. This study aimed to assess the necessity of biliary stenting by retrospectively comparing the bile duct complication rates in LDLT using duct-to-duct anastomosis with or without biliary stenting.

Inclusion Criteria:

• Adults aged between 19 and 80 years at the time of liver transplantation.
• Patients who underwent liver transplantation surgery for liver disease performed by the Department of Surgery at Chungnam National University Hospital under the supervision of the principal investigator.
• Patients who signed the informed consent form before study registration (for future participants).

Exclusion Criteria:

• Patients who have not signed the informed consent form or have insufficient understanding of the clinical trial protocol, making it difficult to accurately express their intention to participate.
• Patients deemed unsuitable for participation in this clinical study by the investigator.

This study includes adult patients aged 19 to 80 years who underwent liver transplantation for liver disease at Chungnam National University Hospital. The study population consists of patients who received either biliary stent placement or no stent placement during the liver transplantation surgery. Data will be retrospectively reviewed to compare biliary complications between the two groups.

The data will not be shared publicly due to the retrospective nature of the study and privacy protection concerns.