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Table 1 Baseline characteristics

From: Right-side versus left-side hepatectomy for the treatment of hilar cholangiocarcinoma: a comparative study

 RH group (n = 33)LH group (n = 24)P value
Clinical variables
 Age66 (42–79)71 (53–83)0.047
 Sex (male)22 (66.6%)15 (62.5%)0.745
 BMI (kg/m2)23.2 (18.2–33.0)23.8 (20.2–34.9)0.702
 Bismuth type IV12 (36.4%)7 (29.2%)0.587
 Preoperative cholangitis14 (42.4%)8 (33.3%)0.486
 Preoperative biliary drainage29 (87.9%)22 (91.7%)1.000
 Portal vein embolization6 (18.2%)0 (0%)0.034
 Total bilirubin prior to surgery (mg/dL)1.30 (0.37–3.47)0.90 (0.47–2.76)0.281
 ICG R-15 (%)12.6 (3.0–19.7)12.5 (4.7–26.7)0.816
 CEA (ng/mL)1.4 (0.2–12.1)2.1 (0.5–33.1)0.198
 CA 19-9 (IU/mL)86.8 (7.9–7514.0)77.3 (1.1–10404.0)0.456
Operative variables
 Operation time (min)557 (415–975)525 (240–1127)0.189
 Portal vein resection9 (27.3%)2 (8.3%)0.097
 Transfusion13 (39.4%)9 (37.5%)0.885
 PHLF (≥ grade B)7 (21.2%)2 (8.3%)0.277
 Complication (≥ IIIA)14 (42.4%)10 (41.7%)0.954
 Hospital stay (days)20 (12–239)19 (8–171)0.862
 90-day mortality3 (9.1%)1 (4.2%)0.631
Pathologic variables
 R0 resection25 (75.8%)18 (75.0%)0.948
 Tumor size (cm)3.5 (1.2–8.5)3.8 (0.8–7.0)0.733
 Differentiation (poorly)4 (13.8%)2 (11.8%)1.000
 Lymphovascular invasion15 (45.5%)14 (58.3%)0.337
 Perineural invasion25 (75.8%)19 (79.2%)0.762
 T stage (≥ T3)9 (27.3%)7 (29.2%)0.875
 N stage (≥ N1)15 (45.5%)6 (25.0%)0.114
  1. Abbreviations: RH right-side hepatectomy, LH left-side hepatectomy, BMI body mass index, ICG R-15 indocyanine green retention rate at 15 min, PHLF post-hepatectomy liver failure
  2. Values are presented as median (range) for continuous data and n (%) for categorical data