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 |