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Updated: Aug 19, 2026
Orthotopic Liver Transplantation in Rats
Published on: July 1, 2012
[Transplantation of reduced-size livers in children]
T Yandza1, F Gauthier, O de Dreuzy
1Service de Chirurgie infantile, Hôpital de Bicêtre, Le Kremlin-Bicêtre.
Insights
Reduced-size liver grafts offer comparable outcomes to full-size grafts in pediatric liver transplantation. This technique significantly expands donor liver availability for children needing transplants, with similar survival rates and complication profiles, apart from increased hemorrhage risk.
Area of Science:
- Pediatric Surgery
- Hepatology
- Transplantation Medicine
Background:
- Liver transplantation in children presents challenges due to donor organ size limitations.
- Liver reduction techniques enable the use of adult or adolescent donor livers for pediatric recipients.
Purpose of the Study:
- To evaluate the efficacy and safety of reduced-size liver grafts compared to full-size grafts in pediatric liver transplantation.
- To assess the impact of graft size on patient survival, reoperation rates, and specific complications.
Main Methods:
- Retrospective analysis of 100 pediatric liver transplantations performed between January 1988 and October 1991.
- Comparison of outcomes between 38 children receiving full-size grafts (46 grafts) and 47 children receiving reduced-size grafts (54 grafts).
- Actuarial survival analysis and comparison of complication rates including death, reoperation, retransplantation, and hepatic artery thrombosis.
Main Results:
- Overall 4-year actuarial survival was 86%, with no significant difference between groups (8% vs. 19% mortality).
- Rates of reoperation (54% vs. 64%), retransplantation (15% vs. 16%), and hepatic artery thrombosis (13% vs. 15%) were similar between full-size and reduced-size grafts.
- Hemorrhage was significantly more frequent in the full-size graft group (P = 0.04).
Conclusions:
- Reduced-size liver grafts provide comparable outcomes to full-size grafts in pediatric liver transplantation.
- The use of reduced-size grafts substantially increases the availability of donor organs for children.
- While associated with a higher risk of hemorrhage, reduced-size grafts demonstrate similar graft survival and complication rates, making them a viable option.
Abstract:
Nowadays, liver reduction techniques make it possible to use livers obtained from adults or adolescents for implantation in children. These techniques have been evaluated by analysis of 100 liver transplantations performed between January 1988 and October 1991 in 85 children. Forty-six full-size grafts implanted in 38 children (group 1) were compared with 54 reduced-size grafts implanted in 47 children (group 2). The overall actuarial survival at 4 years was 86 percent. There was no statistical significant difference between the two groups as regards the rates of death (8 versus 19 percent), reoperation (54 versus 64 percent), retransplantation (15 versus 16 percent), hepatic artery thrombosis (13 versus 15 percent) and graft survival (82 versus 70 percent) respectively. Haemorrhage was significantly more frequent in group 1 than in group 2 (P = 0.04), irrespective of whether transplantation was performed urgently or electively. Using reduced-size livers considerably increases the number of liver grafts available to children. Apart from a greater risk of haemorrhage, the results obtained with reduced-size livers were identical with those obtained with full-size livers.
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