**2.3 Hepatocystic triangle/triangle of Calot**

The hepatocystic triangle is formed on the right side by the proximal part of the gallbladder and the cystic duct, on the left side by the common hepatic duct with the superior part being formed by the liver margin (**Figure 2**) [3]. Originally, the superior border of the Calot's triangle was the cystic artery; however, this area enlarged throughout the years [3]. Several structures run in the hepatocystic triangle, which have to be identified prior to any definitive surgical intervention. We have to visualise the right hepatic artery, cystic artery, common hepatic duct, and potential variations either in vascular or in biliary system [3].
