Cholangiocarcinoma (CCA) is the second most common primary liver cancer after hepatocellular carcinoma (HCC), accounting for 10% to 15% of primary liver malignancy. CCA is formed in the epithelial tissue that makes up the biliary tract and is classified into three anatomical subtypes: intrahepatic carcinoma (iCCA), perihilar carcinoma (pCCA), and distal carcinoma (dCCA) (Khan et al., 2019;Massironi et al., 2020).Viral infections, primary sclerosing cholangitis, biliary lithiasis, congenital malformations, cirrhosis of the liver, and hepatobiliary parasite infections have been found to be risk factors for CCA (Khan et al., 2019). Lifestyle habits, such as alcoholism and smoking, as well as comorbidities, namely diabetes mellitus (DM), also contribute to the risk of CCA (Brandi et al., 2020).