The Role of Conventional and Stereotactic Microwave Ablation for Intrahepatic Cholangiocarcinoma.

Kim-Fuchs, Corina; Candinas, Daniel; Lachenmayer, Anja (2021). The Role of Conventional and Stereotactic Microwave Ablation for Intrahepatic Cholangiocarcinoma. Journal of clinical medicine, 10(13) MDPI 10.3390/jcm10132963

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BACKGROUND

The incidence and mortality of intrahepatic cholangiocarcinoma (ICCA) is increasing worldwide and curative treatment options are limited due to the aggressive tumor biology and often late diagnosis. Resection of the primary tumor remains the only curative therapy available, as the benefit of palliative chemotherapy and radiotherapy is relatively small. In contrast to hepatocellular carcinoma, minimal-invasive thermal tumor ablation, and in particular stereotactic tumor ablation for small primary cancers or metastases, is not established and data are scarce.

METHODS

We conducted a literature review in the field of ICCA ablation and retrospective analysis of 10 patients treated by stereotactic microwave ablation (SMWA) for either primary ICCA or liver metastases of ICCA.

RESULTS

While current guidelines have no consensus for ablation of primary ICCA, some state that it might be an option in inoperable patients or those with recurrent disease. The literature review revealed 11 studies on microwave ablation for ICCA reporting that MWA for ICCA ≤ 5 cm might be safe and could be a treatment option for patients who are not candidates for surgery. No data has been published on stereotactic microwave ablation (SMWA) for ICCA. The analyses of our own data of 10 patients treated by SMWA for primary ICCA (n = 5) or recurrent ICCA (n = 5) show that the treatment is safe and efficient with short hospital stays and low complication rates.

CONCLUSION

Although thermal ablation, and in particular SMWA, might be a minimally invasive and tissue-sparing curative treatment alternative for small ICCA in the diseased liver and ICCA metastases, the oncologic benefit still needs to be shown in larger studies with longer follow-up.

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