Treatment of malignant digestive tract obstruction by combined intraluminal stent installation and intra-arterial drug infusion

Table 1 Installation of stents

Site	Group A		Group B		Total
	No. of cases	No. of stents	No. of cases	No. of stents	No. of cases	No. of stents
Esophagus	81	95	38	49	119	144
Stomach, small intestine	55	64	21	34	76	98
Colon, rectum	19	20	9	10	28	30
Biliary tract	48	53	10	25	58	78
Total	203	233	78	116	281	350

Table 2 Drug infusion

Site	N	Infusion (n)	Total infusion times	Max. per case	Min. per case	Average per case
Esophagus	119	81	310	12	2	3.83
Stomach, small intestine	76	55	229	14	1	4.16
Colon, rectum	28	19	39	8	1	2.94
Biliary tract	58	48	130	9	2	3.65
Total	281	203	708			3.49

Table 3 Maintenance of efficacy (groups A/B)

Site	n	Restenosis		Restenosis (wk)
		n	No. of times
Esophagus	81/38	15/10	20/12	12-35/04-17
Stomach, small intestine	55/21	06/04	07/05	17-42/07-16
Colon, rectum	19/09	02/00	02/00	26-43/0
Biliary tract	48/10	06/04	09/06	8-33/05-26
Total	203/78	29 (14.3)/15 (23.1)	38/23	08-43/04-26

Table 4 Comparison of survival time (groups A/B)

Sites	Cases	Survival (n)	Death (n)	Survival (wk)
				Range	Average
Esophagus	81/38	23/03	58/35	5-103/5-20	36/14
Stomach, small intestine	55/21	09/02	46/19	4-105/2-17	38/11
Colon, rectom	19/09	02/00	17/09	3-98/3-13	33/08
Biliary tract	48/10	06/01	42/09	6-54/3-24	30/18
Total	203/78	40/06	163/72	3-105/3-24	43/13

P < 0.05, for all sites.