Studies on surgical operations and prognosis of extrahepatic bile duct cancer

Table 1 Tumor sites and surgical procedures in 42 patients with extrahepatic bile duct cancer

Tumor site	n	Curative resection, n (%)	Palliative procedures, n (%)		Laparotomy
			Biliary-enteric bypass	Stent insertion
Upper third	17	2 (11.8)	5	10 (88.2)	-
Middle third	11	3 (27.3)	3	4 (63.6)	1
Lower third	14	6 (42.9)	6	2 (57.1)	-
Total	42	11 (26.2)	14	16 (71.4)	1

Table 2 Mean survival period of the total 55 patients with extrahepatic bile duct cancer according to treatment

Group	Treatment	n	Mean survival period (¯x ± s, mo)
1	tumor curative resection	11	21.4 ± 16.7b
2	biliary-enteric bypass	14	12.2 ± 6.8a
3	operative stent insertion	16	7.4 ± 3.4
4	permanent PTCD	6	4.3 ± 1.5
5	conservative treatment or exploratory laparotomy only	8	2.3 ± 1.8

^bP < 0.01 vs groups 2-5;

^aP < 0.05 vs groups 3-5. PTCD: Percutaneous transhepatic cholangio-drainage.

Table 3 Mean survival period with or without percutaneous transhepatic cholangio-drainage prior to operation

Preoperative PTCD	n	Mean survival period (mean ± SD, mo)
Yes	23	12.5 ± 6.6
No	19	15.2 ± 13.4

P > 0.05. PTCD: Percutaneous transhepatic cholangio-drainage.