Extrahepatic metastases from hepatocellular carcinoma: multimodality image evaluation

Area of Science:

• Hepatobiliary Malignancies
• Diagnostic Imaging
• Molecular Imaging

Background:

• Hepatocellular carcinoma (HCC) is the most common primary liver cancer.
• Poor prognosis in HCC is often due to intrahepatic recurrence and extrahepatic metastases.
• Improved HCC survival necessitates better detection and management of distant metastases.

Purpose of the Study:

• To review frequent sites of HCC metastasis and spread.
• To discuss imaging findings of extrahepatic metastases using conventional and molecular techniques.
• To highlight the role of imaging in guiding HCC treatment planning.

Main Methods:

• Review of conventional imaging modalities (CT, MRI) for HCC diagnosis and staging.
• Evaluation of molecular imaging tools, specifically 18F-Choline PET/CT and FDG PET, for detecting HCC metastases.
• Discussion of imaging findings associated with HCC spread.

Main Results:

• Conventional imaging (CT, MRI) plays a key role in HCC diagnosis and therapy qualification.
• Molecular imaging (18F-Choline PET/CT, FDG PET) shows promise as a complementary tool for detecting extrahepatic metastases.
• Accurate detection of metastases is critical for optimizing treatment strategies.

Conclusions:

• Enhanced detection of extrahepatic metastases in HCC is vital for improving patient outcomes.
• Molecular imaging offers valuable insights beyond conventional techniques for HCC staging.
• Imaging findings directly impact treatment planning and patient management in HCC.