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Biliary complications of reduced-organ liver transplantation
P R Reichert1, J F Renz, P Rosenthal
1Universidade de Passo Fundo, RS, Brazil.
Insights
Reduced-organ liver transplantation in children effectively reduces mortality but can lead to biliary complications. Parenchymal bile leaks remain a significant concern, necessitating improved anatomical understanding and diagnostic methods.
Area of Science:
- Pediatric Surgery
- Hepatobiliary Surgery
- Transplantation Medicine
Background:
- Reduced-organ liver transplantation is a viable strategy for pediatric patients, improving outcomes by lowering pretransplant morbidity and mortality.
- While surgical advancements have decreased vascular issues, biliary complications persist as a major cause of posttransplant morbidity in pediatric reduced-organ liver recipients.
Purpose of the Study:
- To investigate the incidence and types of biliary complications following reduced-organ liver transplantation in children.
- To evaluate the effectiveness of planned posttransplantation exploration in identifying and managing early biliary complications.
Main Methods:
- A retrospective review of 42 pediatric patients who underwent reduced-organ liver transplantation over a 59-month period.
- Biliary complications were classified into three categories: missed biliary radicle, anastomotic leak requiring revision, and biliary stricture.
- Planned surgical exploration on postoperative day 7 was implemented for the latter 26 patients to detect early technical issues.
Main Results:
- Ten biliary complications occurred in 9 recipients (24%), including parenchymal radicle leaks (50%), biliary strictures (30%), and anastomotic leaks (20%).
- Planned exploration identified a 15% incidence of parenchymal leaks and a 5% incidence of anastomotic leaks.
- Parenchymal radicle leaks were identified as a primary source of morbidity, despite technical improvements reducing ischemia-related complications.
Conclusions:
- Parenchymal bile leaks remain a significant challenge in pediatric reduced-organ liver transplantation.
- Improved anatomical understanding of biliary territories and the development of noninvasive diagnostic tools are crucial for optimizing reduced-organ liver transplantation outcomes.
- Planned surgical exploration can aid in the early detection and management of biliary complications.
Abstract:
Reduced-organ liver transplantation for children is effective in lowering pretransplantation morbidity and mortality. Improvements in surgical technique have reduced vascular complications; however, biliary complications continue to account for significant posttransplantation morbidity. This investigation chronicles the incidence and type of biliary complications encountered with reduced-organ liver transplantation. Retrospective review of reduced-organ liver recipients over a 59-month period was performed, and biliary complications were classified as (1) missed biliary radicle, (2) anastomotic leak requiring revision, and (3) biliary stricture. From July 1992 to May 1997, 42 children received reduced-organ grafts: 32 living-donor, 8 cadaveric-reduced, 1 split-liver, and 1 auxiliary orthotopic liver transplant. Of the 42 grafts, 41 were Couinaud segments II/III and 1 was segments II/III/IV. Ten biliary complications were identified in 9 recipients (24%). Biliary complications included parenchymal radicle leaks, 5 (50%); biliary strictures, 3 (30%); and anastomotic leaks, 2 (20%). Although technical advances have reduced the incidence of biliary complications secondary to organ ischemia, parenchymal radicle leaks continue to be a source of morbidity for reduced-organ recipients. Planned exploration on posttransplantation day 7 was performed on the most recent 26 of the 42 total reduced-organ procedures as a mechanism to identify and treat early technical complications. Planned exploration as a routine component of reduced-organ transplantation has yielded a 15% incidence of discovered parenchymal leaks and a 5% incidence of discovered anastomotic leaks. This series underscores the necessity for improved anatomical studies to correctly identify duct territories and the development of accurate noninvasive methods to assess the biliary system preoperatively and intraoperatively in the application of reduced-organ liver transplantation.