Research advances in surgical margin of hilar cholangiocarcinoma

Hilar cholangiocarcinoma (HCCA) is the most common biliary malignancy, and surgical operation is the only possible treatment method at present. The nature of surgical margin is an important influencing factor for the long-term survival of patients, and radical resection can bring great survival benefits to patients. The determination of radial margin for HCCA can help to evaluate the nature of surgical margin and predict the prognosis of patients more accurately. This article reviews the latest research advances in the surgical margin of HCCA.