Infiltrating hepatocellular carcinoma: seeing the tree through the forest

Area of Science:

• Hepatology
• Oncology
• Radiology

Background:

• Hepatocellular carcinoma (HCC) is a major global cause of cancer mortality.
• Early diagnosis is critical for improving outcomes, particularly for challenging subtypes.
• The infiltrative HCC subtype, accounting for up to 13% of cases, is often subtle on imaging.

Purpose of the Study:

• To highlight the diagnostic challenges of infiltrative HCC.
• To emphasize the importance of vigilance in surveillance imaging for at-risk populations.
• To discuss potential therapeutic approaches and prognosis.

Main Methods:

• Review of imaging characteristics, including MRI signal intensities (T1/T2).
• Evaluation of portal vein thrombus appearance.
• Discussion of therapeutic options and patient outcomes.

Main Results:

• Infiltrative HCC can be difficult to detect, especially in patients with cirrhosis.
• Specific MRI findings and portal vein thrombus may offer diagnostic clues.
• This subtype's diffuse nature often precludes surgical or transplantation options.

Conclusions:

• Vigilance in surveillance imaging is essential for early detection of infiltrative HCC.
• Multidisciplinary treatment planning is vital for managing this challenging liver cancer subtype.
• Systemic therapy may be a primary treatment option due to limited efficacy of other modalities.