Table 5.

Survival analyses in 83 patients undergoing resection for perihilar cholangiocarcinoma according to distant metastasis, percutaneous transhepatic biliary drainage (PTBD) and blood transfusion requirement: numbers at risk

	Years
	0	1	2	3	4	5
(A)
No distant metastases	74	55	34	21	11	9
Distant metastases	9	2	2	1	–	–
(B)
PTBD	23	15	8	6	1	–
No PTBD	56	39	25	16	10	9
(C)
No blood transfusion	26	21	15	12	6	4
Blood transfusion	41	24	13	8	4	4