Table 1.

Minimal requirement of future liver remnant volume

	Region	Minimal requirement	Total liver volume
Normal liver
Vauthey et al. 7	USA	25%	Formula-based liver volume*
Shoup et al. 21	USA	25%	CT-based non-tumor liver volume
Shindle et al. 22	Europe	26.6%	CT-based non-tumor liver volume
Kishi et al. 23	USA	20%	Formula-based liver volume†
Injured liver (chronic hepatitis/cirrhosis and chemotherapy)
Kubota et al. 8†	Asia	40% or 50%‡	CT-based non-tumor liver volume
Shirabe et al. 24	Asia	250mL/m2§	NA
Azoulay et al.17	Europe	40%¶	CT-based non-tumor liver volume
Shindoh et al. 25	USA	30%∥	Formula-based liver volume†

Abbreviations: CT, computed tomography; NA, not applicable.

^*(Standardized liver volume) = 706.2×(body surface area) + 2.4 by Urata K, et al. ⁹³

^†(Standardized liver volume) = −794 + 1267.28×(body surface area) by Vauthey JN, et al.⁹⁴

^‡Based on indocyanine green retention rate at 15 minutes.

^§Categorized as injured liver based on cohort of patients with hepatocellular carcinoma.

^¶Fibrosis or cirrhosis

^∥Chemotherapy > 3 months