Hepatocellular carcinoma (HCC) and cholangiocarcinoma
(CCA) are the most frequently occurring types of primary liver cancer worldwide
and account for 80% and 15% of primary liver cancer respectively. Current studies have reported that the worldwide
incidence of these liver and biliary tract diseases is increasing.
Environmental and cultural factors are important
determinants of the incidence of HCC. Non-alcoholic liver disease is a
potential key player in the increasing incidence of HCC in the population.
Unfortunately, the early diagnosis of these diseases
remains difficult and, in most cases, the disease is diagnosed late because of
the absence of symptoms in the early stages.
At present, the most accurate diagnostic methods for
these disorders, such as endoscopic retrograde cholangio-pancreatography guided
by bile duct biopsy, percutaneous Tran’s hepatic cholangiography and endoscopic
ultrasonography guided by fine needle aspiration is invasive.
Recently, there has been remarkable progress in
applying proteomics to the identification of potential biomarkers for HCC, CCA,
and PSC. However, these biomarkers are useful for
discriminating between benign and malignant biliary conditions only in patients
who have undergone bile drainage.
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