Imaging of HCC

Area of Science:

• Radiology
• Hepatology
• Oncology

Background:

• Liver cirrhosis significantly increases the risk of developing hepatocellular carcinoma (HCC).
• Early HCC detection is crucial for improving patient survival, but remains a diagnostic challenge.
• Surveillance programs using ultrasonography (US) are recommended for cirrhotic patients.

Purpose of the Study:

• To review current imaging techniques for diagnosing and staging HCC in patients with liver cirrhosis.
• To discuss the role of advanced imaging modalities in characterizing hepatic lesions and assessing disease extent.
• To highlight the importance of imaging in guiding therapeutic decisions and monitoring treatment response.

Main Methods:

• Review of dynamic multidetector computed tomography (MDCT) and dynamic magnetic resonance imaging (MRI) for HCC characterization.
• Discussion of ultrasonography-guided fine needle biopsy (FNB) for non-diagnostic cases.
• Evaluation of imaging's role in staging disease extent and detecting small nodules.

Main Results:

• Dynamic MDCT and MRI are suitable for evaluating the vascular profile of small HCCs in cirrhosis.
• MRI shows higher accuracy in detecting nodules between 1-2 cm compared to MDCT.
• Both techniques have limitations in detecting very small satellite nodules (<1 cm).

Conclusions:

• Imaging plays a pivotal role in the management of HCC in cirrhotic patients, from diagnosis to post-treatment monitoring.
• The choice of imaging technique depends on lesion characteristics and diagnostic certainty.
• Accurate staging and response assessment through imaging are essential for optimal patient management and therapeutic decision-making.