Self-expandable metal stents for malignant gastric outlet obstruction: A pooled analysis of prospective literature

Table 4 Adverse events n (%)

	Overall (n = 1281)	UCSEMS (n = 970)	PCSEMS (n = 311)	P value1
Stent dysfunction	251 (19.6)	185 (19.1)	66 (21.2)	0.412
Re-obstruction by tumor growth	161 (12.6)	145 (14.9)	16 (5.1)	< 0.001
Stent migration	55 (4.3)	21 (2.2)	34 (10.9)	< 0.001
Stent compression by tumor pressure	9 (0.7)	3 (0.3)	6 (1.9)	0.008
Stent fracture	7 (0.5)	3 (0.3)	4 (1.3)	0.064
Insufficient expansion	11 (0.9)	8 (0.8)	3 (1.0)	0.734
Food occlusion	9 (0.7)	6 (0.6)	3 (1.0)	0.460
Other	2 (0.2)	2 (0.2)	0	-
Perforation	15 (1.2)	12 (1.2)	3 (1.0)	1.000
Bleeding	52 (4.1)	25 (2.6)	27 (8.7)	< 0.001
Major bleeding requiring intervention	10 (0.8)	9 (0.9)	1 (0.3)	0.466

¹Comparison of UCSEMS and PCSEMS using Fisher’s exact test. UCSEMS: Uncovered self-expandable metal stents; PCSEMS: Partially covered self-expandable metal stents.