Comparison of systemic responses of radiofrequency ablation, cryotherapy, and surgical resection in a porcine liver model

Annals of Surgical Oncology
Kelvin K NgSheung Tat Fan

Abstract

The degree of systemic response after hepatic radiofrequency ablation (RFA) has not been well investigated. An in vivo study was conducted on 23 domestic swine. Different hepatic procedures (RFA, cryotherapy, hepatic pedicle ligation, and hepatectomy) were performed on the medial lobe of the liver (30% of the liver volume). Systemic responses in terms of systemic inflammatory marker changes and end-organ functions were determined. During the early postoperative period, the systemic inflammatory marker concentrations (tumor necrosis factor-alpha and interleukin-1beta) in the RFA group were significantly lower than in the cryotherapy group but significantly higher than in the control group. The corresponding concentrations in the hepatectomy group remained similar to those in the control group. The pattern of changes of serum inflammatory marker concentrations in the pedicle ligation group followed the pattern in the RFA group. The serum intracellular content concentrations (lactate dehydrogenase and urate) of the cryotherapy group peaked at 6 hours after operation, which was significantly later than in the other groups. Liver function, renal function, and coagulation profiles remained normal in the RFA group. However, the renal ...Continue Reading

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