Effectiveness and Safety of Endoscopic Treatment of Benign Biliary Strictures Using a New Fully Covered Self Expandable Metal Stent

Table 3

Prior prospective studies on fully covered SEMS for benign biliary strictures.

Study (year)	N	Type of stent	Stricture resolution success rate	Migration rate	Mean followup; (months)
Traina et al. (2009) [17]	16	Niti-S Comvi	87.5%	38%	10.1
Mahajan et al. (2009) [13]	44	GORE VIABIL	83%	4.5%	3.8
Hu et al. (2011) [18]	13	A short stent with a retrieval suture	92.3%	None	12.1
Park et al. (2011) [19]	22	SEMS with anchoring flap	91%	None	3.6
	21	SEMS with flared end	88%	33%	4.2
Tarantino et al. (2012) [20]	39	Niti-S Comvi (after failure of conventional therapy)	71.8%	33.3%	22.1
	15	Niti-S Comvi (as first approach)	53.3%	46.7%	14.4
Poley et al. (2012) [16]	23	HANAROSTENT	61%	4%	15
Perri et al. (2012) [21]	7	Unflared end Niti-S	43%	100%	24
	10	Flared end Niti-S	90%	40%	24
Tarantino et al. (2012) [22]	62	Niti-S Comvi	90.3%	24.2%	15.9
Current study	23	Wallflex	96%	39.1%	18.8