Loading clinical trials...
Loading clinical trials...
Browse 4,817 clinical trials for breast cancer. Find studies that match your criteria and connect with research centers.
Find trials near:
Showing 3521-3540 of 4,817 trials
NCT02281812
Background/Main objective: Radiofrequency ablation (RFA) is a minimally invasive procedure widespread accepted in the treatment of different tumors, especially in the liver but its benefit is not yet well-known in breast cancer. Our main objective is to evaluate the usefulness of RFA in \< 2cm malignant breast tumors to reduce the proportion of positive margins. Methodology: The investigator propose a single-center, single-blind, phase I and II randomized controlled trial. Phase I:Security of the cool-tip cluster electrode assessing the potential adverse effects in three stages: initial,intermediate and final. Phase II: Randomized clinical trial, 2 parallel groups with 37 patients in each one. Experimental group: percutaneous RFA previous to conventional lumpectomy. Control group: conventional surgery with lumpectomy. The number of positive margins in both groups, and the need of extending margin resection will be assessed intraoperatively. Inclusion criteria: women \>40 years, infiltrating ductal breast carcinoma by biopsy. The tumor must be unique, visible by ultrasound, smaller than 2cm and located \> 1 cm from the chest wall and the skin. Patients will be followed up for a period of two years to assess cosmetic result, short -term and long -term complications and recurrences. Expected results: The "cool-tip" (cluster) ablation method reduces by at least 30% the risk of intraoperative extensions for positive margins during lumpectomy compared to conventional surgery in breast tumors with a diameter \< 2 cm. Therefore this procedure may reduce the risk of second surgeries and the removed volume of tissue.Consequently the final cosmetic result should be improved.
NCT03543059
Breast cancer is one of the most common malignant tumor in women. About 60% of breast cancer patients are still in premenopausal status at the time of diagnosis in China. It is a multicenter prospective observational study. We will collect basic information, medical history, chemotherapy-related adverse reactions, and the results of hormone, blood lipid, and bone density test before, during and after adjuvant or neoadjuvant chemotherapy. The aim of the study is to evaluate the effect of chemotherapy on ovarian function and fertility and the protective effect of GnRHa. In addition, the collected information of the subjects are analyzed to provide suggestions for the relevant prevention strategy.