Retrospective Study
Copyright ©The Author(s) 2022.
World J Hepatol. May 27, 2022; 14(5): 992-1005
Published online May 27, 2022. doi: 10.4254/wjh.v14.i5.992
Table 5 Details of patients who had recurrent biliary obstruction following covered self-expandable metallic stenting (< 130° group vs ≥ 130° group)

< 130° group
≥ 130° group
P value
n = 16n = 71
RBO, n (%)7 (43.5)11 (15.5)0.07
n = 7n = 11
Cause of RBO, n (%)7 (100.0)11 (100.0)
Sludge formation or food impaction 3 (42.9)8 (72.7)
Tumor overgrowth3 (42.9)2 (18.2)
Migration1 (14.2)1 (9.1)
Tumor ingrowth0 (0.0)0 (0.0)
Elevated liver enzymes, n (%)6 (85.7)5 (45.5)

  • Citation: Tanoue K, Maruyama H, Ishikawa-Kakiya Y, Kinoshita Y, Hayashi K, Yamamura M, Ominami M, Nadatani Y, Fukunaga S, Otani K, Hosomi S, Tanaka F, Kamata N, Nagami Y, Taira K, Watanabe T, Fujiwara Y. Angle of covered self-expandable metallic stents after placement is a risk factor for recurrent biliary obstruction. World J Hepatol 2022; 14(5): 992-1005
  • URL: https://www.wjgnet.com/1948-5182/full/v14/i5/992.htm
  • DOI: https://dx.doi.org/10.4254/wjh.v14.i5.992