MR乳腺线圈对腋窝淋巴结的评价

目的　研究正常与异常乳腺腋窝淋巴结的MRI表现 ,探讨MR乳腺线圈对术前乳腺癌腋窝淋巴结转移的评估。方法　应用MR乳腺线圈对 2 4例健康志愿者、2 3例乳腺良性疾病患者和 43例乳腺癌患者共 119个腋窝进行扫描 ,对比分析MRI片内各组腋窝淋巴结的形态、边缘、大小、数目和信号变化 ,并将乳腺癌组淋巴结表现与组织病理学结果进行对照。结果　 3 1.2 5 %的正常健康人腋窝可以检出淋巴结 ,乳腺良性疾病、乳腺癌腋窝淋巴结无转移者 (LN -)淋巴结的形态、边缘、大小、数目和信号变化与正常健康人无显著差异 ,乳腺癌腋窝淋巴结转移者 (LN + )淋巴结的形态、边缘、大小和强化方式与前三者有显著差异。结论　MRI是术前评估腋窝淋巴结状态的有效检查方法 ,为临床手术和治疗提供有价值的依据

Evaluation of MR Breast Coil on Axillary Lymph Nodes

Objective To study the MRI features of normal and abnormal axillary lymph nodes so as to explore the evaluation of MR breast coil on metastasis of axillary lymph nodes in patients with breast cancer before operation.Methods MR scanning was made on 119 axillas from 24 healthy volunteers,23 patients with benign breast disease and 43 patients with breast cancer with MR breast coil.The shape,border,size,number and signal intensity of axillary lymph nodes in every group were comparatively studied.The features of the axillary lymph nodes of the patients with breast cancer were compared with the histopathologic results.Results Axillary lymph nodes were detected in 15 out of the 48 healty volunteer axillas (31.25%).The shape,border,size,number and signal intensity of axillary lymph nodes had no significant difference between the patients with benign breast disease and the patients with breast cancer with no metastasis lymph nodes (LN-)and the healthy volunteers.The shape,border,size,and enhancement pattern of the patients with axillary lymph nodes metastasis(LN+)were statistically different from that of the above mentioned three groups.Conclusion MRI is an effective method to evaluate the status of axillary lymph nodes before operation.It provides useful evidences for clinical operation and treatment.