Abstract
Intrahepatic cholangiocarcinoma (ICC) is the second most common primary liver cancer after hepatocellular carcinoma (HCC). ICC and HCC have different cellular origins; therefore, ICC is significantly different from HCC in terms of aetiology, mechanism, tumour biological behaviour, treatment methods, and prognosis. The objective of this study was to investigate the current incidence trend and prognosis of ICC and deepen the understanding of ICC. A large sample of ICC and HCC patient data was obtained from the Surveillance, Epidemiology and End Results (SEER) database of the National Cancer Institute (NCI), USA. The incidence trend, prognosis, and the effect of surgery and lymph node dissection on the prognosis of ICC patients were analysed. In recent years, the incidence of ICC has increased. The treatment effect of ICC patients has been significantly improved. But the prognosis of ICC patients is significantly worse than that of HCC patients. Surgery can benefit all stages of ICC, and lymph node dissection is beneficial for the prognosis of patients with positive lymph nodes (N1). In recent years, the incidence of ICC has been increasing, and its prognosis remains poor, which is a cause for concern. We need to understand the epidemiological and pathophysiological characteristics of ICC and explore more effective treatment methods to improve the efficacy of treatment for ICC patients and prolong their survival.
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