Phase Ii Study On Radiofrequency Ablation In Stage 0 And I Breast Cancer Without Extensive Intraductal Components.
EUROPEAN JOURNAL OF CANCER(2017)
摘要
e12094Background: We reported about a multi-center registration study on radiofrequency ablation (RFA) in early breast cancer (BC) (ASCO2012 #1119). Although various devices and ablation procedure were used, 5-year’s recurrence-free survival was 96% in 425 cases of T1BC treated with RFA alone. To validate complete pathological ablation in BC, we started a non-randomized phase II study in 2013 (UMIN000013836). Methods: Unilateral BC patients with stage 0 (TisN0M0) or I (T1N0M0 or T1N1miM0) were eligible. Tumor diameter of 2cm or less should be diagnosed by ultrasound and MR mammography. RFA was performed by Cool-tip RF ablation system (Covidien, USA). One month later, ablated tissue was collected by core needle biopsy or vacuum-assisted breast biopsy. Cell viability was determined by central review of independent pathologists using tumor specimens stained with hematoxylin–eosin and nicotinamide adenine dinucleotide (NADH) diaphorase. In case of complete ablation, breast irradiation and adjuvant therapy was...
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