[A new development in interventional radiology for hepatocellular carcinoma]

Area of Science:

• Interventional Radiology
• Hepatocellular Carcinoma Treatment
• Medical Imaging Technology

Context:

• Hepatocellular carcinoma (HCC) management in Japan relies on interventional radiology (IVR) techniques like transcatheter arterial embolization (TAE).
• Cirrhosis and multicentricity are common challenges in Japanese HCC patients.
• Advancements in IVR technology, including catheters, embolic materials, and IVR-CT, enable superselective TAE and precise tumor evaluation.

Purpose:

• To evaluate the impact of transcatheter arterial embolization (TAE) on survival in Japanese patients with hepatocellular carcinoma (HCC).
• To address the uncertainty surrounding TAE's survival benefit based on existing international randomized controlled trials (RCTs).

Summary:

• Four out of five international RCTs comparing TAE with no treatment, i.v. 5-fluorouracil, or tamoxifen showed no survival benefit.
• Existing evidence from European and Eastern countries does not definitively establish the survival advantage of TAE for HCC.
• Superselective TAE is now feasible due to technological advancements.

Impact:

• Further randomized controlled trials (RCTs) are necessary in Japan to clarify the role of TAE in HCC survival.
• The findings highlight the need for region-specific research to guide treatment decisions for liver cancer.
• Understanding TAE's true impact is crucial for optimizing HCC patient care in Japan.