Microwave Ablation of Hepatic Tumors Abutting the Diaphragm Is Safe and Effective

Abstract

Our study shows that microwave ablation of peridiaphragmatic hepatic tumors is safe, without incidence of diaphragmatic hernia, and can be performed with a low rate of local tumor progression.

Evaluation of microwave ablation of liver malignancy with enabled constant spatial energy control to achieve a predictable spherical ablation zone

“…We also observed a significant reduction in the time required for interventions with ECSEC by 17% (compared with HF-MWA) or 16% (compared with LF-MWA), but notably, range: 0.9-5 range: 1.5-6.2 2 versus 3: p ¼ 0.287 in clinical practice, the mean reduction of 2 min is considered trivial with respect to workflow. However, for patients, the reduced time required yields a lower general risk and is more comfortable due to the shorter administration time of sedative medication [15,28]. Certain limitations to this study warrant discussion.…”

“…The patients were observed for the following eight hours, and in the case of pathological vital signs, control CT was performed; otherwise, the patients were discharged. Following the standardised SIR grading system, major complications were defined as events that lead to substantial morbidity and disability and increase the level of care or that require a distinctively longer hospital stay; all other occurring complications (such as moderate local pain) were determined to be minor [28,30].…”

“…However, spherical ablation is more beneficial because it may improve the achievement of large, sufficient margins and further the effectiveness of treating lesions that are more than 3 cm in diameter [26,27]. Additionally, spherical ablation zones may minimise the risk of complications associated with the thermal damage of CONTACT Thomas J. Vogl t.vogl@em.uni-frankfurt.de adjacent normal liver tissue, compared with elongated ablation zones [15,26,28]. A recently introduced MWA ablation system with enabled constant spatial energy control (ECSEC) achieves a more spherical ablation zone by providing field and wavelength control [29].…”

Hepatic Microwave Ablation in Challenging Locations

“…24 A retrospective review of MWA within 5 mm of the liver capsule and diaphragm for 55 hepatic tumors demonstrated no cases of diaphragmatic perforation or hernia. 25 Temperature was not monitored or controlled, but the authors did report a trend toward lower power applications in the peripheral ablation group compared with the centrally located control group. This study showed no statistically significant differences between peripheral and central ablations in postablation measured diaphragm thickness, reported shoulder pain, and pain scores.…”

Combination therapy of three-dimensional (3D) visualisation operative treatment planning system and US-guided percutaneous microwave ablation in larger renal cell carcinomas (D ≥ 4 cm): preliminary results

“…Therefore, this novel technique might provide more information and valuable assistance in PMWA treatment for larger RCCs. To protect the intestinal tract from thermal damage, artificial ascites was employed in this study because it is a safe and effective assistive method for the treatment of tumours adjacent to the intestinal tract and can achieve good local control of such tumours [20,21]. During the ablation procedure, monitoring of the temperature of the tumour periphery and intestinal tract periphery was extremely important.…”