Effect of weight reduction on liver volume in living liver donors with steatosis: a retrospective cohort study
10.4174/astr.2026.110.4.273
- Author:
Kwangpyo HONG
;
Kwang-Woong LEE
;
Su young HONG
;
Sola LEE
;
Hyun Hwa CHOI
;
Jiyoung KIM
;
Jaewon LEE
;
Jae-Yoon KIM
;
Jeong-Moo LEE
;
Suk Kyun HONG
;
YoungRok CHOI
- Publication Type:ORIGINAL ARTICLE
- From:Annals of Surgical Treatment and Research
2026;110(4):273-280
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:Weight reduction (WR) can reduce liver volume, affecting the graft-to-recipient weight ratio (GRWR). This study aimed to evaluate the decrease in liver volume after WR and analyze risk factors affecting liver volume reduction in potential liver donors with steatosis.
Methods:We retrospectively reviewed data of 147 potential liver donors with steatosis who participated in a WR program prior to liver transplantation between January 2016 and December 2021. Total liver volume (TLV) was measured using CT and MRI. Risk factors for large liver volume reduction (≥10%) were analyzed using multivariate logistic regression.
Results:Ninety-seven donors (66.0%) underwent donor hepatectomy after WR. Liver volumes showed a statistically significant decrease (from 1,399.6 ± 315.4 mL to 1,283.6 ± 271.2 mL, P < 0.05). Thirty-eight donors (42.7%) showed large liver volume reduction. There was a more significant reduction in weight, AST, and ALT in the large liver volume reduction group than in the small liver volume reduction group (all P < 0.05). WR percentage and ALT abnormalities were independent risk factors for large liver volume reduction (odds ratio, 1.184 [95% confidence interval, 1.054–1.329] and odds ratio, 5.502 [95% confidence interval, 1.660–18.229], respectively; all P < 0.05).
Conclusion:Potential liver donors with 7% or more WR or ALT abnormality require liver volume/GRWR remeasurement after WR to ensure adequate graft size and prevent small-for-size syndrome.
