Image-Guided Interventions in Oncology by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9783030487676
Publisher: Springer International Publishing

Percutaneous Ablation

Microwave ablation has become the preferred percutaneous treatment modality when treating liver tumors due to superiority at overcoming heat sink effects that can limit efficacy of radiofrequency and cryoablation. Heat sink occurs when energy is deposited into flowing blood within adjacent blood vessels and is carried away from the treatment zone. Heat sink effect may contribute to suboptimal treatment of the target lesions. Microwave ablation has been shown to be non-inferior to radiofrequency ablation when treating hepatocellular carcinoma. There is a paucity of data regarding survival and recurrence rates when utilizing percutaneous ablation within the liver for NENs. However a meta-analysis of radiofrequency ablation of hepatic metastasis demonstrated that ablation can provide symptomatic relief when performed alone or in combination with surgery [18]. Percutaneous ablation is best utilized in patients with few lesions (less than 10% of hepatic parenchyma replaced by tumor) with individual lesions measuring less than 4 cm in diameter and not amenable to surgical resection.

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