Cholangiocarcinoma--controversies and challenges

Area of Science:

• Oncology
• Gastroenterology
• Hepatology

Background:

• Cholangiocarcinomas (CCA) are heterogeneous biliary tract cancers with poor prognoses.
• Diagnosis is challenging, pathogenesis is unclear, and management approaches are often nihilistic.
• Two main phenotypes exist: intrahepatic mass-forming and ductal tumors, with distinct characteristics.

Purpose of the Study:

• To review the distinct clinical phenotypes of cholangiocarcinomas.
• To highlight challenges in diagnosis, risk factor assessment, and management.
• To discuss emerging therapeutic strategies offering hope for improved outcomes.

Main Methods:

• Review of current literature on cholangiocarcinoma classification and management.
• Analysis of challenges in epidemiological studies and therapeutic evaluations.
• Synthesis of emerging diagnostic and treatment modalities.

Main Results:

• Anatomical classifications are inconsistently applied, complicating research.
• Different phenotypes require tailored therapeutic strategies, especially for systemic therapies.
• Emerging tools and therapies show promise for better patient outcomes.

Conclusions:

• Improved diagnostic tools and expanded surgical indications are crucial.
• Locoregional, intrabiliary, and systemic therapies are evolving.
• A better understanding of distinct cholangiocarcinoma phenotypes is essential for effective management and improved prognoses.