“…Moreover, only case reports and small series can be found in the literature, and there is no difference between the open and laparoscopic era in the rate of its detection [1,2,4,5,7,8,12,14,22,25,[27][28][29][30]. In these reports, the incidence of MS ranged from 0.4% to 2.53% [1,2,4,5,7,12,14,25,[27][28][29]. Several classification systems have been developed to distinguish between different types of MS. Involvement of the hepatic duct via the destruction of its wall or simple external compression is the most important criterion.…”