Cholangiocarcinoma.

Cholangiocarcinoma (CC) is a heterogeneous group of malignancies that originates at any point along the biliary tree. CC is an uncommon malignancy as it represents approximately 3% of all gastrointestinal malignancies, though its global incidence is rising. CC can often be asymptomatic in its early stages and as a result, it is frequently diagnosed in later stages, leading to challenges in clinical management.