Is Microwave Ablation for Liver Metastases a Repeatable Procedure?

Microwave ablation (MWA) is increasingly recognized as an effective and repeatable treatment option for liver metastases. Unlike traditional open surgery, which often involves significant trauma and the removal of large portions of the liver—including healthy tissue—MWA offers a minimally invasive alternative.

During MWA, a thin needle is inserted into the tumor under imaging guidance. The tip of the needle generates heat, effectively destroying the tumor and a small margin of surrounding tissue. Because the procedure is less invasive and preserves more liver function, it can be safely repeated if necessary.

One of the key advantages of MWA is its applicability in managing recurrent or multiple tumors. For patients with diseases like colorectal cancer that have metastasized to the liver, MWA can be performed in stages—sometimes two or even three times—to ensure complete tumor ablation. This staged approach allows for better targeting of tumors while minimizing damage to healthy liver tissue.

Clinical evidence supports the long-term benefits of repeated MWA sessions. Studies have shown that patients undergoing multiple ablations can achieve improved survival rates, with some reporting a five-year survival rate as high as 50%. This makes MWA a valuable tool in the long-term management of liver metastases.

In conclusion, microwave ablation is not only repeatable but also a strategic option for patients with liver metastases. By leveraging its minimally invasive nature and ability to be used multiple times, MWA can significantly extend survival and improve quality of life for many patients.