射频消融目前已成为肝癌的一线治疗方法，且安全有效。据报道，对于小肝癌的治疗，射频消融已取得与手术相近的疗效，且具有微创、费用低的优势。膈顶部肝癌被认为是射频消融的特殊部位，一方面由于肺部气体的干扰使超声显像不清造成定位困难;另一方面由于毗邻膈肌而可能导致膈肌热损伤等相关并发症，最终使得其治疗效果不佳。有学者报道了CT引导下经肺射频消融，腹腔镜引导下经胸廓、膈肌射频消融以及借助人工胸水和腹水射频消融等不同方式治疗膈顶部肝癌，虽然在一定程度上解决了上述问题，但同时也存在创伤大、并发症多、操作困难等缺点。

Radiofrequency ablation is a safe and effective treatment modality that has become the first-line therapeutic approach for hepatocellular carcinoma (HCC). It has been reported that radiofrequency ablation has achieved effects similar to those of surgery for the treatment of small HCC, while having additional advantages of minimal invasiveness and low cost. HCC tumors abutting the diaphragm are considered especially suitable for radiofrequency ablation for the following reasons: (1) the tumors are difficult to locate as gas interference from the lungs results in unclear ultrasound images and (2) the close proximity of the tumors to the diaphragm may cause thermal diaphragmatic injuries or other related complications, ultimately resulting in poor treatment outcomes. Researchers have reported various modalities for the treatment of HCC tumors abutting the diaphragm, including CT-guided transpulmonary radiofrequency ablation, laparoscopy-guided transthoracic transdiaphragmatic radiofrequency ablation, and radiofrequency ablation with artificially induced pleural effusion and/or ascites. Although these techniques can address the aforementioned issues to a certain extent, they are associated with limitations such as considerable trauma, multiple complications, and difficulty in device manipulation.