Table 3 Results on route, previous treatment, treatment time, technical success, clinical success and complications in case series with uncovered SEMS (uSEMS) for benign biliary strictures

Yamaguchi et al [63]

Streckerstent (2)

> 5 years (7.4 year)

plastic stent placement

unknown

Wallstent (6)

O Brien et al [58]

Wallstent

mean 64,5 months (26-81)

plastic stent placement (5)

median 35 months (7-57)

Tesdal et al [69]

Wallstent (11)

mean 63,8 months

balloon dilatation (19)

mean 30,2 months

Palmazstent (9)

median 80,5 (2-116)

Streckerstent(4)

Deviere et al [15]

Wallstent

mean 33 months (24-42)

plastic stent placement (11)

3 and 6 months (2/20)

Mygind et al (75)

Z stent

4 and 7 months

balloon dilatation

unknown

Maccioni et al [56]

Z stent (17)

mean 37 months (30-41)

percutaneous dilatation

unknown

Wallstent (1)

Foerster et al [52]

Wallstent

mean 32,7 weeks (21-53)

laparotomy (2)

8 months until now

Retrospective studies

van Berkel et al [62]

Wall stent

mean 50 months (6 d -86 months)

none

60 months

Roumhilac et al [60]

SEMS (12)

median 37 months (18-53)

plastic stent treatment for 1 year

no stent obstruction

Eickhoff et al [51]

Wallstent

median 58 months (22-29)

plastic stent placement

median 20 months (10-38)

Kahl et al [55]

Wallstent (3)

median 37 months (18-53)

plastic stent treatment for 1 year

no stent obstruction

Bonnel et al [49]

Z stent

mean 55 months (9-84)

surgery (17)

T tube (8)

Rieber et al [59]

Palmaz stent

mean 18 months (1,5-43)

balloon dilatation

62% occlusion

post PTBD

occlussion time

1,5-2,5-24 months

Hausegger et al [53]

Walsltent

mean 31,2 months (3-78)

balloon dilatation

73% (6 months)

38% (36 months)

19% (end follow up)

3-3-3-4-5-11-24-2-36-55

Chu et al [50]

Z stent

unknown

plastic stents

0%

PTBD

Ivancev et al [54]

Z stent (2)

9 and 14 months

balloon dilatation

50% (5 months)

Rossi et al [16]

Z stent

mean 8 months (4-12)

baloon dilatition

unknown