Extreme liver resections with preservation of segment 4 only

Table 1 Patient characteristics of the congestion group

	Sex	Age, yr	Weight, kg	Preoperative chemotherapy	Comorbidities	CLM
Patient 1	Female	52	55	Oxaliplatin	None	Metachronous
Patient 2	Female	61	63	Oxaliplatin	SAH	Metachronous
Patient 3	Female	39	98	Oxaliplatin + bevacizumab	None	Synchronous
Patient 4	Female	54	66	Oxaliplatin	None	Metachronous
Patient 5	Female	65	46	Oxaliplatin	DM, SAH	Metachronous

CLM: Colorectal liver metastases; DM: Diabetes mellitus; SAH: Systemic arterial hypertension.

Table 2 Hypertrophy rate of congested and non-congested segments

	Segments 2/3			Segment 4 (± S1)			P vaule
	1st stage, in cc	2nd stage, in cc	Hypertrophy rate	1st stage, in cc	2nd stage, in cc	Hypertrophy rate
Case 1	205	253	24%	157	391	149%
Case 2	228	331	45%	192	505	163%
Case 3	309	679	120%	272	823	203%
Case 4	248	407	64%	225	641	185%
Case 5	186	214	15%	167	206	23%
mean ± SD	235 ± 42	377 ± 165	54 ± 37	203 ± 42	513 ± 211	144 ± 63	< 0.05

1^st stage: Volumetry before 1^st stage; 2^nd stage: Volumetry before second stage (after right hepatectomy and segments 2 and 3 congestion).