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Table 1 Patient and tumour characteristics

From: Predictors of survival after surgery with curative intent for perihilar cholangiocarcinoma

Variables n = 88 (range, %) Missing data, n (%)
Age (years, median, range) 64 (30–80) 0 (0)
Gender   0 (0)
 Male 52 (59)  
 Female 36 (40)  
BMI (kg/m2, median, range) 24.54 (17.6–35.4) 8 (9)
ASA   0 (0)
 1 6 (7)  
 2 53 (60)  
 3 29 (33)  
Cholangitis 12 (14) 0 (0)
Biliary drainage 56 (64) 0 (0)
 Endoscopic 44 (50)  
 Percutaneous transhepatic 2 (2)  
 Both 10 (11)  
CEA serum level (μg/L) 2.55 (0.7–18.8) 50 (57)
CA19-9 serum level (kU/L) 151 (1–3215) 36 (41)
Bismuth-Corlette classification   0 (0)
 Type I 12 (14)  
 Type II 19 (22)  
 Type IIIa 20 (23)  
 Type IIIb 25 (28)  
 Type IV 12 (14)  
Pathological T-stage   0 (0)
 Tis 1 (1)  
 T1 12 (14)  
 T2 65 (74)  
 T3 6 (7)  
 T4 4 (5)  
Pathological N-stage   4 (5)
 pN0 46 (52)  
 pN1 33 (38)  
 pN2 5 (6)  
Differentiation grade   24 (27)
 Well (G1) 20 (23)  
 Moderate (G2) 30 (34)  
 Poor (G3) 14 (16)  
Tumour diameter (mm, median, range) 26 (10–80) 19 (22)
Total number of lymph nodes (median, range) 8 (1–22) 7 (8)
Positive lymph nodes (median, range) 2 (1–13) 1 (1)
ECLNI 14 (16) 1 (1)
Perineural invasion 69 (78) 2 (2)
Resection margin   0 (0)
 R0 74 (84)  
 R1 14 (16)  
pRM   38 (43)
 ≤ 1 mm 36  
 > 1 mm 14  
  1. BMI body mass index, ASA American Society of Anesthesiologists physical status classification system, CEA carcinoembryonic antigen, CA carbohydrate antigen, Tis tumour in situ, ECLNI extracapsular lymph node involvement, pRM magnitude of tumour-free resection margin