Comparison of Microwave Ablation With Breast Conserving Surgery for Breast Tumor

Comparison of Ultrasound Guided Percutaneous Microwave Ablation With Breast Conserving Surgery for Breast Tumor

The investigators will perform this study to prospectively compare the clinical outcome after percutaneous microwave ablation(MWA) and breast conserving surgery of benign and malignant breast lesion under ultrasound (US) guidance.

A total of more than 300 patients diagnosed with breast tumor in multiple centers will be recruited in this study and underwent US-guided percutaneous MWA and breast conserving surgery treatment. Information for each patient includes demographics; longest diameters of tumors; tumor numbers; tumor pathological type; location of tumor according to whether adjacent to skin, pectoralis, areola and papilla. Ablation variables including session, puncture, time, and power; complete ablation, complications; reduction in volume, palpability, pain and cosmetic satisfying outcomes,recurrence,survival will be compared and analyzed.

Inclusion Criteria:

1. women,
2. with invasive ductal carcinoma of the breast according to core-needle
3. tumor measuring 50mm or smaller, no axillary lymph node metastasis or Ipsilateral grade I and II axillary lymph node metastasis, movable(pT0-2N0-1M0 )
4. located at least 10 mm from the skin surface and chest wall.

Exclusion Criteria:

1. men
2. women who were pregnant or breastfeeding
3. radiologic suspicion of multifocality or extensive intraductal carcinoma
4. histologic diagnosis of lobular carcinoma
5. neoadjuvant therapy
6. previous surgery or radiation therapy of the ipsilateral breast.