[Intrahepatic cholangiocarcinoma]

Area of Science:

• Radiology
• Oncology
• Gastroenterology

Background:

• Intrahepatic cholangiocarcinoma (IHC) is a rare but aggressive biliary tract cancer.
• Accurate diagnosis and treatment depend on understanding its diverse pathological and imaging characteristics.

Purpose of the Study:

• To provide a comprehensive overview of current diagnostic and therapeutic strategies for intrahepatic cholangiocarcinoma (IHC).
• To detail the imaging features of IHC across various modalities, focusing on MRI.
• To emphasize the role of dynamic contrast enhancement in IHC detection.

Main Methods:

• Review of current literature on intrahepatic cholangiocarcinoma (IHC) diagnosis and treatment.
• Detailed analysis of imaging findings from ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI).
• Specific focus on diffusion-weighted MRI and dynamic intravenous contrast enhancement patterns.

Main Results:

• The paper describes microscopic and macroscopic varieties of IHC.
• Specific imaging features across ultrasonography, CT, and MRI are detailed, including diffusion-weighted MRI.
• Dynamic contrast enhancement analysis is crucial, with diffuse heterogeneous arterial enhancement and centripetal enhancement in later phases being characteristic.

Conclusions:

• Dynamic contrast enhancement and hemodynamic analysis are vital for diagnosing intrahepatic cholangiocarcinoma (IHC).
• Characteristic imaging patterns, particularly on MRI, allow for confident identification of this rare neoplasm.