Not all reoperative laparoscopic liver resection procedures are feasible for hepatolithiasis patients with a history of biliary surgery

Table 1 Baseline characteristics of the three subgroups, n (%)

Characteristic	Reoperative laparoscopic left lateral sectionectomy (n = 40)	Reoperative laparoscopic left hemihepatectomy (n = 50)	Reoperative laparoscopic complex hepatectomy (n = 11)	χ²/F value	P value
Male	9 (22.5)	16 (32.0)	4 (36.4)	1.333	0.5141
Age, mean (SD), years	62.3 (11.5)	61.8 (7.8)	60.0 (7.7)	0.261	0.7712
Body mass index > 21.5 kg/m2	18 (45.0)	25 (50.0)	6 (54.5 )	0.402	0.8181
American Society of Anesthesiologists score 2-3	21 (52.5)	19 (38.0)	5 (45.5)	1.895	0.3881
Obstructive jaundice	6 (15.0)	11 (22.0)	2 (18.2)	0.716	0.6991
Benign liver lesions	32 (80.0)	43 (86.0)	9 (81.8)	0.588	0.7451
Number of previous surgeries > 2	2 (5.0)	1 (2.0)	0 (0.0)	N/A3	0.706
Types of previous procedure				N/A3	0.250
cholecystectomy	29 (72.5)	28 (56.0)	9 (81.8)
Choledochotomy with exploration	11 (27.5)	19 (38.0)	2 (18.0)
Hepatectomy	0 (0.0)	3 (6.0)	0 (0.0)
Types of previous approach				N/A3	0.789
Open surgery	30 (75.0)	40 (80.0)	9 (81.8)
Laparoscopic surgery	9 (22.5)	7 (14.0)	2 (18.0)
Unclear	1 (2.5)	3 (6.0)	0 (0.0)
Interval between last two surgeries				N/A3	0.608
≤ 2 years	3 (7.5)	8 (16.0)	2 (18.2)
> 2 years	30 (75.0)	37 (74.0)	8 (72.7)
Unknown time-interval	7 (17.5)	5 (10.0)	1 (9.1)

¹χ² test was used.

²One-way analysis of variance was used.

³No χ² value was reported for Fisher's exact test.

N/A: Not applicable.