Thermal ablation

Thermal ablation is a minimally invasive medical procedure used to destroy diseased or unwanted tissue, most commonly tumors, through the application of extreme temperatures. It is not a biological molecule or receptor but a physical intervention that utilizes energy sources—such as radiofrequency, microwave, or laser—to induce rapid protein denaturation and coagulative necrosis within a targeted volume (National Cancer Institute, 2023). This technique is widely employed in oncology for treating primary and metastatic tumors in the liver, lung, kidney, and bone, as well as in cardiology for treating arrhythmias (StatPearls, 2023). Unlike pharmacological agents, thermal ablation provides immediate physical destruction of the target area without relying on specific biochemical pathways. While highly effective for localized control, its efficacy can be limited by the heat sink effect near large blood vessels, which can dissipate heat and lead to incomplete treatment (Mayo Clinic, 2024). There is also a risk of collateral damage to adjacent vital structures, requiring precise image guidance during the procedure. In recent years, it has been increasingly studied in combination with immunotherapies to enhance systemic anti-tumor immune responses by releasing tumor-associated antigens into the bloodstream (Journal of Clinical Oncology, 2022). This synergy aims to convert a cold tumor environment into an immunologically hot one, potentially improving the outcomes of checkpoint inhibitor therapy.

Other names

Radiofrequency ablationMicrowave ablationLaser interstitial thermal therapyHigh-intensity focused ultrasoundCryoablationThermal therapy

Induction of localized tissue destruction via extreme temperature-mediated coagulative necrosis and protein denaturation.