Long-term outcomes after stenting as a “bridge to surgery” for the management of acute obstruction secondary to colorectal cancer

Table 2 Data of lymph node count, administration of adjuvant chemotherapy and laparoscopic surgery in studies comparing self-expandable metallic stents by-pass to elective surgery and emergency operation for obstructive colorectal cancer

Ref.	Lymph node count	Adjuvant chemotherapy	Laparoscopic surgery
	SEMS vs EO	SEMS vs EO	SEMS vs EO
Ghazal et al[43]		80% vs 76.7%
Saida et al[45]		66% vs 53%; P = 0.54
Alcántara et al[46]	17.7 vs 24.2; P = 0.099
Tung et al[34]	23 vs 11; P = 0.005	75% vs 54%; P = 0.2
Gianotti et al[40]	23 vs 18; P = 0.08	46.7% vs 34%; P = 0.28	38.7% vs 0%; P = 0.000
van den Berg et al[42]	Lymph node harvest > 12	39 vs 39; P = NS
	62.7% vs 60.7%; P = NS
Kim et al[29]	28.9 vs 24.4; P = 0.25	84% vs 65.7%; P = 0.085
Sabbagh et al[33]	22 vs 15; P = 0.002	56.2% vs 43.6%; P = 0.28
Kavanagh et al[44]	17 vs 17; P = 0.29	36% vs 46%; P = 0.29	27% vs 12%; P = 0.1
Gorissen et al[25]		41.6 vs 25.6%; P = 0.13	59.6% vs 23%; P = 0.001
Sloothaak et al[32]	15 vs 13; P = 0.180	13 vs 15; P = 1.000

SEMS: Self-expandable metallic stents; EO: Emergency operation.