“…After ERCP failure, post LCD, missed stone rate was 1.09%, 3.2%, and 4.8% in Karaliotas et al, 2008 [ 41 ], Karaliotas et al, 2015 [ 28 ], and ours studies respectively, however, after ERCP failure, LCD in non-dilated CBD had no retained stone in Jinfeng et al, 2016 [ 32 ] study, while the retained stone rate after LCD for impacted stone reached 6.7% in Khan et al, 2015 [ 64 ] study, on the other hand, the retained stone rate after LCD was in the range of 1.2% and 8% in Jinfeng et al, 2016 [ 32 ], Jinfeng et al, 2016 [ 1 ], Mattila et al, 2017 [ 65 ], Khaled et al, 2013 [ 68 ], Grubnik et al, 2012 [ 67 ], Quaresima et al, 2017 [ 4 ], Tokumura et al, 2002 [ 66 ], and Paganini et al, 2005 [ 61 ] studies, conversely, there was no retained stone rate after LCD in Zhan et al, 2016 [ 7 ], and Vindal et al, 2015 [ 69 ] studies.…”