• J Laparoendosc Adv Surg Tech A · Aug 2021

    Operative Microwave Ablation for the Multimodal Treatment of Neuroendocrine Liver Metastases.

    • Ryan C Pickens, Jesse K Sulzer, Michael J Passeri, Keith Murphy, Dionisios Vrochides, John B Martinie, Erin H Baker, Lee M Ocuin, Iain H McKillop, and David A Iannitti.
    • Division of Hepato-Pancreato-Biliary Surgery, Department of Surgery, Carolinas Medical Center, Atrium Health, Charlotte, North Carolina, USA.
    • J Laparoendosc Adv Surg Tech A. 2021 Aug 1; 31 (8): 917-925.

    AbstractBackground and Purpose: Operative microwave ablation (MWA) is a safe modality for treating hepatic tumors. The aim of this study is to present our 10-year, single-center experience of operative MWA for neuroendocrine liver metastases (NLM). Methods: A single-institution retrospective review of patients who underwent operative MWA for NLM was performed (2008-2018). Demographics, primary tumor site, operative approach, combined surgical operations, and carcinoid symptoms were recorded. Clinical outcomes for major complications, readmission, and mortality were analyzed 30 days postoperatively. Postablation imaging was evaluated for incomplete ablation/missed lesions, and surveillance imaging reviewed for local, regional, and metastatic recurrence. Results: Of the 50 patients (166 targeted lesions) who received MWA for NLM, 41 (82%) were treated with a minimally invasive approach, and 22 (44%) underwent MWA concomitant with hepatectomy and/or primary tumor resection. Within the study cohort 70% of patients were treated with curative intent with a 77% (27/35) success rate. Carcinoid symptoms were reported in 40% (20/50) of patients preoperatively, and MWA treatment improved symptoms in 19/20 patients. Incomplete ablation occurred in 1/166 treated lesions. Recurrence-free survival at 1 and 5 years was 86% and 28%, respectively. Overall survival at 1 and 5 years was 94% and 70%, respectively (median follow-up 32 months, range 0-116 months). Conclusion: Operative MWA is a versatile modality, which can be safe and effectively performed alone or combined with hepatectomy for NLM, preferably using a minimally invasive approach, to achieve symptom control and possibly improve survival.

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