Prognostic value of lymphovascular invasion in Bismuth-Corlette type IV hilar cholangiocarcinoma

Table 1 Demographics and operative outcomes

Characteristic	n (%)
Age (yr)1	59 (23-78)
Gender
Male	75 (52.8)
Female	67 (47.2)
Albumin level (g/L)2	36.74 ± 4.93
CA19-9
> 200	82 (57.7)
< 200	60 (42.3)
Radiological examination
Contrast-enhanced US	8 (5.6)
Contrast-enhanced CT	43 (30.3)
MRI + MRCP	91 (64.1)
Operative time (min)2	429.47 ± 134.19
Blood loss (ml)1	600 (180-4000)
Transfusion	76 (53.5)
R0 resection	107 (75.4)
Differentiation degree
Well differentiated	14 (9.9)
Moderately differentiated	90 (63.4)
Poorly differentiated	38 (26.8)
Perineutral invasion positive	69 (48.6)
N stage
N0	89 (62.7)
N1	53 (37.3)
Tumor diameter (mm)1	30 (12-55
Hospital stay1	19 (5-115)

¹Parameters are presented as median and range;

²Parameters are presented as mean ± SD.