Intraoperative frozen section diagnosis of bile duct margin for extrahepatic cholangiocarcinoma

Table 1 Clinicopathological characteristics of extrahepatic cholangiocarcinoma

	pCCA (n = 34)	dCCA (n = 40)
Age (yr), median (range)	71.5 (44-82)	72.5 (39-85)
Gender
Male	23	6
Female	11	34
Preoperative biliary drainage
Yes	33	38
No	1	2
Procedure
PD	1	38
HH	27	1
PD + HH	5	0
Bile duct resection	0	1
Others	1	0
Total number of duct margins for frozen section	55	45
Number of duct margins for frozen section
1	15	35
2	17	5
3	2	0
pT
pT1/pT2	27	20
pT3/pT4	6	19
Unknown	1	1

dCCA: Distal cholangiocarcinoma; HH: Hemihepatectomy; pCCA: Perihilar cholangiocarcinoma; PD: Pancreaticoduodenectomy.