Application of preoperative MRI on breast cancer patients undergoing breast-conserving surgery / 实用放射学杂志

ABSTRACT

Objective To evaluate the influence of preoperative MRI on tumor-positive rate of resection margins in breast cancer patients eligible for breast-conserving surgery.Methods Study group consisted of 64 consecutive patients with breast cancer eligible for breast-conserving surgery,while 73 cases as history control group.For the two groups,a first plan for breast-conserving surgery was made on the basis of conventional imaging and clinical evaluation.Study group underwent preoperative breast MRI and re-evalu-ated before final surgical plan was made.Rates of tumor-positive resection margins were compared between the 2 groups.Surgical plan alteration was recorded in the study group.Results Study group had lower rate of tumor-positive resection margin compared with control group (9.6% vs 24.7%,P =0.04).Furthermore,18.8% of study group altered the finial surgical plan to mastectomy after breast MRI.Conclusion Preoperative breast MRI can more acurately evaluate the extent of breast cancer,therefore decrease rate of tumor-positive resection margin in breast cancer patients eligible for breast-conserving surgery.