With regard to the article published in your journal by Konstantinos Tsalis et al on Klatskin-mimicking lesions, we recently diagnosed a neuroendocrine tumor (NET) in the proximal biliary tract of a 78-year-old female with obstructive jaundice manifestations. A chest-abdomen-pelvis CT scan identified infiltrating ductal cholangiocarcinoma (Klatskin tumor, type IV in the Bismuth-Corlette classification with cT2N1 staging) and a liver mass in segment IV.